Originally Posted by Silvermoth
I don't deny that she would make a wonderful addition to the Avengers sequel but the fact is, she doesn't have much of a supporting cast or any really famous stories to be a part of (besides that infamous one about Immortus). It would be incredibly difficult for her to maintain a story.
To be fair, most heroes don't have really famous stories outside of their origin. Ms. Marvel at least has a couple memorable/notable ones, the infamous one, the Binary one, the Rogue-takes her powers one.
As for supporting cast, Ms. Marvel is a SHIELD agent, and she has a couple of recurring human love interests. That's as much (more) supporting cast as any of the other females, all of which are dependent on groups that includes more significant male heroes for their supporting cast (Inhumans, SHIELD, the unavailable mutant community).