subsmoke
[10] Knight
As far as the final boss goes, I would imagine the most likely candidate would be Inferno, since he was the final boss in SC1. Though I'd want them to change up the character a it and maybe not make him a mimic and make him a bit scarier or something.
I agree, but only if he's playable this time around. It would be a waste of time to design a fully-fledged movelist for an unplayable boss that you only fight against maybe a handful of times.