Don't kid yourself. He was supposed to be the hip, edgy Captain America. Armed with a dark and tortured past - not mention emo-hair - he'd make the world safe for Twilight fans everywhere.
Also, he got a hair cut like three years ago.
I'm looking forward to when he's killed off again.
Doubtful, given how popular he is; fans like him and creators like using him now that he's been brought back. Unless Brubaker has it as an endgame of his story (possible, but he's a big Bucky fan, so I tend to doubt it), I expect him to be a fixture of Cap's supporting cast (and Steve really needs as much supporting cast as he can get).