Re: James Buchanan Barnes aka The Winter Solider
I want him to be a soldier who befriends Steve. He's with Steve when Steve & Red Skull "get killed". He also apparently dies, until either an after-credit scene or a flashback in the sequel where the Russian military finds him. Then, he can be Winter Soldier in the sequel.
I think he could make a pretty interesting villain for the second movie.
"Okay...This looks bad."