Deadpool, Cable, Stryfe, Omega Red.
Weapon X movie
some type of storyline involving those characters.
all those characters really ran thier course, I don't think marvel would even do it now, no one takes any of them serious anymore except for deadpool but that's cause he's funny as hell.
Ironman has a movie coming out, Black Panther has been rumored for years. There is another Batman movie in the works with the Joker as the villian.
A green lantern movie would be cool.
Captian amarica is dead right now, they're getting alot of press cause of it so maybe they could cash in on it but they tried a cap movie in the early 90's and it was terrible, never even got released on video but you can find clips on youtube.