I included Hulk because of a) he was an original, b) the movie, and c) there is the Red Hulk on the team, who has analagous powers. If you replace him with Vision, Hawkeye, and Scarlet Witch, that makes the teams unbalanced - but if that's not a problem, I have no problem with these.
I would suggest also adding Quicksilver, but I wouldn't want Flash hurting himself laughing at how slow the Avengers' "speedster" is.
