Ugh. Completely forgot about the live stream. I like what I see but it's difficult to give much of an opinion before I spend time with the game.
My only complaint so far is a minor one but I have to admit it really bothers me. I hate the art they picked for Avengers Assemble. Looks more like they are taking a group picture than gathering to face a dangerous foe. I'd rather have Captain America front and center leading an attack with other Avengers at his side.
Like I said, minor complaint but I really dislike their choice of art.