I could see She Hulk, maybe even brought in later but not this soon. They just put the team together and just got the Hulk. I think it would be too soon to introduce another Hulk, even if it is a She-Hulk. But She is one of the more possible female characters with her origin being easy, her powers already established with the Hulk. It'd be easier to introduce her than someone like Scarlet Witch, who I also love and would want to see in an Avengers film at some point too.
Carol does seem like the most likely, as well as Janet/Wasp because she will be in Ant Man I am sure. So we would then have Black Widow, Maria Hill, Wasp, and then we could also have Captain Marvel/Carol. That would be good, especially with Carol being presented as a Thor power level hero with the leadership/importance of a Captain America or Iron Man.
To me She Hulk seems like someone they could bring around movie 3 or 4 for some reason.
If Carol did get her own movie her character would be clearly defined in it, and the comic would follow suit. Not that I think she lacks a character in the comics now, just that no matter what the movie would establish her character to the public.
And I agree completely, no matter what they need more female heroes in the Marvel movie universe. Captain Marvel, Wasp, Scarlet Witch, She-Hulk, Spider-Woman, Valkyrie, etc.
So, speaking of Avengers. Cap 2 will have [BLACKOUT]Falcon[/BLACKOUT] I heard and [BLACKOUT]Winter Soldier[/BLACKOUT]. and the cartoon which will follow the movie more will also have [BLACKOUT]Falcon[/BLACKOUT] on the team of Avengers. Ant Man will happen soon, and that will hopefully lead to him in Avengers 2 or 3 and also meaning Wasp will join the Avengers too in 2 or 3. So that means that soon the roster will be
Avengers 2 (or 3)
Captain America
Iron Man
Thor
Hulk
Hawkeye
Black Widow
[BLACKOUT]Falcon[/BLACKOUT]
Ant Man
Wasp
and I hope soon they will add Captain Marvel/Carol before the whole space/aliens/cosmic stuff is wrapped up. So that would then mean by movie 3 or 4 the team will have 9-10 members on it. And who is to say by Avengers 3 there wont also be Namor and Black Panther.
So do you think that they can put them all into one film? Will some of the characters not get in, or some of the original have to go to make space?