Re: What's The Team Going to look Like?
I think Marvel is just avoiding putting supporting heroes minus (Hawkeye and Black Widow) in the main Avengers team.
Joss bringing back the Avengers from the first film as well beefing up Hawkeye's role in AoU and introducing Scarlet Witch and Quicksilver. I don't think they want to overload the film with too many heroes.
Perhaps in Avengers 3 they can go up against Thanos and his army which will require the Avengers to bring together a larger team that will include Captain America, Thor, Iron Man, Black Widow, Scarlet Witch, Hawkeye, Quicksilver, Giant-Man, Wasp, Falcon, War Machine and Black Panther.