Introduction
I have a lot of problems with this game. Here's a list of them and how i'd fix them. Let's a go.
Locations & level design
One of the biggest problems this game has with it's locations, is that they treat their regions as tile sets rather than actual cohesive areas. Let me show you what I mean.
Destiny 2's Earth map
This is an image from Destiny 2 that shows the layout of it's earth map. Notice how the map has named locations and a clear layout of where exactly every area is. Now, Any mission that takes place on Earth in Destiny 2 takes place somewhere on this map. This gives the player a sense of direction and allows them to use their own knowledge of the map to get around quickly. Because everything on earth takes place on this one map, It allows the developers to hand craft it to a beautiful degree and fill it with easter eggs and secrets that players can find.
Now, Let's compare this to Avengers.
Utah Badlands
Every mission in a region takes place in it's own map seperate from every other mission in that region. This means that nearly every mission has its own unique map and layout (some use the same). Now you may be saying to yourself "Isn't that a good thing? nearly every mission has its own unique map!?". Except it's not a good thing, it's not a good thing at all.
Instead of Taking Destiny 2's approach and creating one well crafted region with recognizable landmarks, they instead made individual small maps by hand that all look the same and have no unique identity. This ends up making the locations feel like they were created by procedural generation. They didn't make Utah Badlands a unique region by giving it deep caverns, high rising cliff sides and unique areas with secrets. No, they made it a "unique" region by putting rocks everywhere and making it brown. Pacific northwest is "unique" because it has trees and everything is green. Eastern seaboard is a just a generic city that only feels "unique" because of how it takes place in a populated area.
The thing that irks me the most is that they're well able to craft unique and cool looking locations in this game.
Golden Acres in the Utah Badlands
The decomissoned helicarrier also in Utah Badlands
They create these cool landmarks and locations that are only ever used once in story mode. Instead of booting up missions with friends and going, "Oh cool, we have to go to golden acres for this mission!", instead we're going "Oh cool, this mission takes us to an aim lab! Just like that last mission...at least we get to look at rocks on the way there?".
Super duper amazing photoshop edits all done by me
This is a shitty mockup done by me to show just a rough example of what I would want from a region in Marvel's Avengers. The cool thing about having an all connected map means they could allow players to do something similar to Destiny called "Patrols". I'll get to this point in a different section.
Another quick obvious flaw with the locations is that they are not exactly "Marvel locations". Here's a quick list of locations that could be cool to visit.

• Wakanda
• Tokyo (if a ronin storyline ever happens)
• Asgard
• Sokovia
• Sanctum Sanctorum (that leads into nightmarish / dreamlike areas)
• A Kree Ship
• Avengers tower (more so as a hub, but a mission where you take it back or get attacked like in "Age of Ultron" could be fun)

Loot & Gear
So gear kinda sucks in this game. It's a png with stats (that are usually bad) and they usually have uninspiring perks. It is not appealing to grind for loot in this game. However, there is a fundamental flaw with gear and stats in this game that I think in the long run make the combat even more repetitive than it already is.
List of Stats:

• Might - Melee damage
• Precision - Ranged damage
• Proficiency- Crit chance / Perk chance
• Valor - Heroic effectiveness / crit damage
• Resolve - Max health / health recovery
• Resilience - Armor
• Intensity - stun + status meter damage/ Status resistance.

Now, I don't mind the game having in depth stats and breaking them up into small groups. However, the two main ones I have a problem with are "Might'' & "Precision".
Now, it makes sense why these two are both separate stats. It makes the ideas of builds sound more viable and entices the players to play the characters however they want. The problem with this is the fact that in most viable builds, players can really only choose one of the damage stats, which leads to the other being useless. This ends up limiting the usefulness of a character's combat kit.
https://preview.redd.it/vfq8qzsbhxg61.jpg?width=1920&format=pjpg&auto=webp&s=6dacb510c767e8b6b5a78448d1622b955e5876fc
Let's take Iron man for example. I have invested a lot into precision, leaving might left behind in it's dust. This means I can only really use iron man's ranged weapons if I actually want to do damage, which isn't terrible as I wanted to make Iron man a ranged character anyway. However, I'm better off never using his melee combat, which means I can say goodbye to some of my skills.
bye bye to those melee skills!
At Least I still have my repulsors, Lasers and Rockets. Awesome!....But this is not entirely the case. If I really want to make a good character build, I'm gonna have to mess with my gear perks and the battery effect.
What is the battery effect? It's pretty much the idea of applying one status effect to any enemy (Cosmic, particle, Plasma) then attacking with the opposite (Gamma, shock, cryo). These status effects are found on gear in the ranged slot and melee slot.
example of status effect on gear for Captain America
Now unlike a game like Destiny 2, which also has different status types on its gear, The perks that give you status type damage only apply to certain combat moves, not all of them. In the picture above, it shows how my light combo finisher AND heavy power attacks deal cryo damage. This forces me as a player to spam these specific moves out over and over again to get my characters full damage potential. The funny thing about the gear I chose to show off as an example is that it's an "Exotic" piece of gear, the highest rarity of gear in the game. What's unique about some of the exoitc gear pieces is how some give you status type damage on two of your moves. Exotic gear is incredibly hard to find, nevermind a piece that has good stats and two status type damages as a perk. This means more often than not, your gear will only provide you with 1 way to provide status type damage, meaning players will often be spamming only 1 type of melee move and only 1 type of ranged move.
Let's bring this all back to my Iron man build. Let's say I get particle status type damage on my rockets. This means my rockets are the only really viable ranged move I have. Uh oh. This will force me into a repetitive combat loop where I will pretty much ignore all my moves except rockets.
Bye bye to pretty much everything
This will end up making arguably the best thing about Marvel's Avengers, it's combat, into a repetitive slog in the endgame. In some ways, the combat is actually more fun before you reach base power cap of 130 because you can use anything you want without worrying. So much love went into these characters skill sets yet all these restrictions put on them with gear just ruins it all.
I don't have thousands of hours invested into looter shooters like other people have, but I think I have some ideas to make it all more appealing.

• First of all, turn might and precision stats into gear slot specific stats. What I mean by this, is that my melee and ranged gear slots should act more like weapons from Destiny or Borderlands. My melee attacks shouldn't rely on stats accumulated from all my gear pieces like Chest, utility, ranged or my artifacts. They should instead just rely on the gear piece in my melee slot. Same with ranged gear pieces.
• Secondly, if a ranged or melee gear piece does status type damage, it should be applied to all my attacks and not specific ones. For example, If I'm iron man and I get a ranged gear piece that does Cryo status type damage, I should be able to do cryo damage with my Rockets, Repulsors and Lasers.

Ok, I want to quickly cover gear and their perks and why they suck. I feel as though the most exciting part of looter shooters is seeing what their new loot pick up does. Of course they're excited to see what kind of stats it has, but more often than not, they're excited to see what differentiates it from everything else. This usually occurs in the perks of gear. However, this is not the case for gear in Avengers.
Perks only start to get sort of interesting once you reach Exotic rarity gear. However, I say only "sort" of interesting, because the perks on the exotic gear are usually on the same level of perks you'd find on lower level gear in other looter games, such as Destiny 2. Making exciting gear in this game is probably harder than most looter games, due to it being a 3rd person action game rather than a shooter and it also has to deal with a lot of different characters. Personally, If I was Crystal dynamics, I would take the perks exclusive to exotic gear, and put it on legendary and epic gear. They should then re-work all exotic gear to be muuuuuch more exicitng. Here's a few dumb examples of perks

• When Iron Man gets in Hulkbuster, his normal suit of armour is taken off of him and acts as an helpful ai for the team
• Thor's ranged attack no longer throws mjolnir, but instead shoots lightning, causing bonus shock damage.
• Everytime Kate teleports, she leaves behind a decoy that acts like her support skill decoy but is 50% weaker. Can only have 5 max decoys at one time.

etc. etc. You guys get my point. Before I move on from loot and gear, I'd like to make a short list of fixes for battling the rng of loot

1. Re-rolls on gear
2. certain Exotic's have a chance of dropping anywhere, specific exotics and higher chances of getting them exclusive to certain missions.
3. I'm not a big fan of artifacts and exotic artifacts, but if they have to stay, at least make them usable by all characters

Traversal
Ok, I'mma make this one quick. Traversal is not great. I appreciate how they tried to give all the characters different ways of movement, but none of them feel exactly good. I feel as though if we ever get large connected maps and "patrol" mission types, movement being improved is a necessity. I don't know how to fix traversal, but I'll just give some examples

• Certain ground characters like Cap, Black Panther and Bucky gotta run at this speed. They have to.

Dat boi fast

• Hulk absolutely needs a charge jump like hulk Ultimate destruction
• Flying characters need their speed increased
• If we do get more open maps, Characters like black widow could possibly get vehicles?
• When Spider-Man is introduced, the more open maps means he has a higher possibility of having a pretty good web slinging system. With the maps we have now though, and the way black widow swings off of poles with no momentum, it might not look too good.
• Unrelated, but when/if falcon is released, we better be able to recreate that flying sequence through the canyon from "The Falcon and The Winter Soldier" trailer.

I feel as though having fast paced, good traversal is needed for the power fantasy of being a superhero. Let's hope they can come up with something good.
Mission types / variety
I feel as though the biggest complaint about Marvel's Avengers right now is lack of content. going through floors and floors of Aim labs and fighting 4 villains (If you include aim Mech's as villians) is very repetitive. I can only hope Crystal Dynamics know what they're doing to combat the repetitiveness. Here's a few fun notes I had.

• Raid like content is needed. Increase the max player count and give players mechanics unique to that mission
• Patrols from Destiny. I've mentioned these already, but it's pretty much free roam around a region with no specific mission. Allows you to explore, find secrets, take on bounties and just mess around. I feel as though if we get Bigger maps and an overhauled traversal system, this mode would be a fan favourite.
• Horde - survival mode
• Payload push mode
• Seasonal events with unique spins on existing content with unique rewards, for example at halloween, horde mode could be based on marvel zombies, with a zombie cosmetic as a reward.

One thing I wanted to mention is solo player content. At the moment, it makes sense Crystal dynamics should focus on multiplayer content as that is lacking badly. However, I would like to see a return of single player only story missions.
When new characters like Dr. Strange is introduced, I'd love to see a single player only story mode where you play as Dr. Strange on your own trying to go up against a threat before you meet the avengers. If Crystal dynamics ever do focus on single player, story missions, here a few examples I think would be fun

• Cap and Falcon infiltrating a hydra base
• Thor returns to asgard alone where he faces Loki
• Hawkeye / Ronin goes to tokyo to take on the yakuza

Monetization
This is a point that is moot to argue about, but I'll do it anyway.
I hate Microtransactions. I hate how there is a cosmetic store where outfits are being sold at $14 a piece. I feel as though in a game with superheroes as iconic as these, and with such iconic outfits, it feels terrible to have to pay for the outfits instead of earning them. If I was able to change this, I would do this:
Get rid of premium currency. Every 3 months, a battle pass is released for $20 with 150 tiers. All the rest of the new cosmetics are distributed through the cosmetic vendor, Patterns, seasonal events and certain mission rewards. Giving us a large battle pass is also another incentive to log on daily and gives the player a sense of progression.
Hell, If Crystal Dynamics gave us 2 years of good support, I wouldn't mind paying for big expansions from year 3 onwards.
Conclusion:
ok...this was a pretty long post. Now, throughout this whole post, all I did was complain. Complaining, complaining & more complaining, But I only wrote out this whole post because of how much I love this ip and how much faith I have in this game and Crystal Dynamics. I don't expect them to make all these changes, or even any of them, but I expect them to do better. Which I think they will.
I've been around this game since early 2017 when they showed the teaser trailer. I snooped around the orignal Reddit for this game when it was still known as the "Avengers project". I was here for every rumour, prediction, wishlist and "leak". I remeber when this one guy called "scirius" leaked how this game would be an ultimate alliance reboot and had something dumb like 70 playable characters and a hells kitchen expanison. ahhhh good times. I was here for the e3 2019 reveal backlash. I was here for the lack of information for months (good to see that never changed lol) and I was here for the launch. What i'm trying to say is, I'll be here till the end. Whether that end is a year from now or 10 years from now, I'll be here. Cause I can do this all day.
tl;dr: Fix Hulk’s hair pls