But that was due to the era too.

FC today, on today's machines, would be far more complex/diverse in troop number and type... Back then it stretched machiens to their limits, one of its biggest downfalls by many accounts. I know I got a card just to play it at the time. Worked great with my older games too of course though. Suddenly nothing got choppy on XW: Alliance or Jedi Knight, that was for sure, haha.
I think for a FPS to survive today, it really REALLY has to amaze the fans... graphically, gameplay, SP story, MP play...
For SP, by most accounts, Bioshock is a great basis... MP you look at the COD's and HALO's. HALO's maybe one of the better rounded series, and a SW HALO clone (maybe sans "super armor") would be pretty hot I think, if it was executed well across all areas from the controls, to the graphics, to scale/scope, and all that stuff.
Star Wars has let me down steadily though, since the 90's when they really innovated on a format. Now they just replicate at best, and sometimes it's pretty bad what they come up with.
Not to say good games haven't come out, but nothing captured me like X-Wing, or TIE Fighter, or Dark Forces. TFU was ok, but not great. Republic Commando was fun, but not amazing. Just fun. Bounty Hunter had great story, and some of the levels were really impressively designed, but the controls sucked and hurt the experience. Rogue Squadron showed that flight games on consoles will forever lick the taint of sims on PC till they figure out how to bridge that gap.
KOTOR is the only truly immersive experience, and that was largely done outside of LA.

Sad when Lego Star Wars is the most SW gaming fun I've had in recent years... TOR aside I suppose, though I've drifted from it some due to life.