You know me. I'm a Marvel nut but everything I read led me to avoid this one. I was quasi-interested in it until I heard about the card mechanic plus purchasable crap. It and Gotham Knights have gotten mixed reviews at best.
The card mechanic and purchasable crap are the least of the game's problems. The card based combat is not as bad, but does make the game luck based rather than skill. There isn't much you can do if you get bad cards. Honestly it feels more like a mobile game than a PC game.
At the start of each turn you get dealt random attack cards from the available heroes decks. What I find stupid is that it is possible that all cards are for one hero, and the others don't even get any attacks for a turn.
It is also stupid that you have the most powerful avengers and superheroes on your team, yet you have difficulty defeating a few henchmen.
The real problem however is the extremely poorly written story and dialogue, and a forced home base exploration area where you must socialize with the other idiots. It feels like two completely different games were smushed together for no reason whatsoever. A poorly made TPS RPG, and a mediocre to OK turn based combat strategy game.
The combat can be enjoyable, but the rest is getting in the way of doing actual encounters.