They've shown themselves (at least to me) to be a team that focuses on the best graphics, but therefore cutting down on gameplay innovation. They have their Rogue Squadron formula and have been running with it for over a decade now...they need to prove they can either make a totally new game, or at least make a solid, fresh experience in flying combat games.
I would like a Rogue Squadron 4...it could look very beautiful on the Wii, since Factor 5 has worked with the Gamecube for the past 2 Rogue Squadrons...but they'd have to show they can make a fresh experience.
I honestly do not want to blow up the Death Star AGAIN, and though tying up AT-ATs is fun...there's a lot of Expanded Universe stories out there that they could use for a brand new game...perhaps one with flying and ground missions...except ground missions that don't suck hard.
A game that uses the Jedi Knight ground combat mixed with Rogue Squadron flying missions could potentially rock. Too bad they're different teams.