Well, we've never had an evil Star Wars FPS ala TIE Fighter.
Actually, TIE Fighter was not really "evil" though, because it brought into play the usual ambiguity of what really is evil? A point of view. The empire was just trying to maintain order over chaos through some fear and oppression (sounds like lots of govts out there today on our backwards planet). Granted, Vader and the Emperor aren't exactly nice people lol.
I like matters of gray. Star Wars can be quite gray, but usually the games are too shallow to go that direction. I don't think a prequel era game could do it at all.