Discussion around this game is so weird, like vultures picking at a carcass. It's not a very good game but it's one that could be a lot more... with an ambitious content roadmap. Then again I'm one of the very weird people who was actually interested in the GAAS aspects and think the combat has a sort of potential to it. Just the current package is nowhere near where it needs to be.
Yeah but could it really? It's absolute fundamental basics are very, very flawed, and I'm counting everything from mission design to loot behaviour and cosmetics, from ingame store to random pickups, xp system, character selection, singleplayer gameplay, motivation to continue after finishing the story, existing and upcoming areas and actual content variety, level design in- and outdoors, corridoors and AIM everywhere.
What's really good about it is the single player story (explicitely excluding the gameplay here), and that's pretty much where it ends when I check reviews, Youtube videos and other voices about the game.
It might be that you, in particular, really enjoy the general gameplay, but a ton of players don't and say it's repetitive, you die out of nowhere, the leveling system is flawed and the actual gameplay feels samey and boring between the few playable Avengers. Then there's the whole deal having to repeatedly level more characters if you want them, which would require a lot of grind with very little variety.
I would be happy if this game can somehow turn itself around, but with this many pillars already broken, I don't know if there's any chance at all it will completely recover before it gets eventually shuttered. Personally, I think Anthem had a much, much better chance of redeeming itself, but it had two chances (one directly after launch, one with the "remake" plans) and it missed both of them. Avengers is in a similar boat, but it has a far less imaginative world, and why it's story is surely more enjoyed than Anthem's, it has even bigger issues when it comes to actual game mechanics that aren't affected by the well working fighting system itself (i.e. loot, world design, character design, customization, quest design and amount and variety and so on), stuff that can't just be fixed by throwing more characters at it.
And, don't forget, with all of this, Avengers is still the licensing deal of the decade. There's practically nothing in pop culture that's bigger than Avengers right now. There's more than just the developers looking at how this goes.