I think they'll put Lightning in, and possibly someone from XII, Vaan or Balthier (maybe even Fran, she's got an exotic look to her) first come to mind. I really want to see Red XIII get some action. Vincent will probably get some attention too, since Dirge came out after II. For villains, I'd like Jecht to make an appearance, but if he did he'd probably be forced to be a villain, like Auron was. Kefka would be badass addition too!

In all reality, I'd love to see every FF character get some attention, but there's just too many.