So I put a decent amount of time in it last night, playing Hawkeye, and the gameplay just feels bland. I mean, I know there is a story there but it just feels like mindless clicking and button mashing with no point. There is nothing exciting about the drops, even when it's rare (outside of costumes, is there anything that physically changes the way your character looks?). I'm just running around, doing quests and killing roaming bad guys. Lack of customization means there are a ton of the same character running around which ruins immersion. At least in DC Universe there is ways to change your look but I'm not seeing that here. I also agree with some others, the boss fights are uninspiring, at least at the lower levels.
At this point it just feels like generic diablo clone with marvel characters and not that great of a clone to begin with.