What I'd like from this project:
Immersion. Immersion. Immersion. This is one of the primary reasons that I believe FS2 is/was the best space sim ever made (don't get me wrong I loved Tie Fighter but FS2 upped the ante
). It's immersive. Part of this has to do with the beautiful scenery (the nebula missions were some of my favorites), and the awesome, and well developed story line. The briefings were also very well done. Part of it was also just from the incredibly awesome ship designs and HUGE capital ships. And of course the fast paced, frantic gameplay. And keep in mind this is all from a "universe" not nearly as developed as that of Star Wars (obviously).
I really don't want to see a re-hash of the LucasArts games (though I wouldn't mind seeing a port of Tie Fighter's campaign somewhere down the road), but rather something new and different, something that gives this project the chance to be creative.
The Star Wars universe really is incredibly broad in scope which means if the dev team behind this project wants to, they can come up with something completely new and amazing (story/setting wise), which will help contribute to amazing gameplay. Off the top of my head, I'd like to see combat in some unusual environments, like I said before, nebulas are all around awesome. Perhaps battles around, even INSIDE asteroids? Black holes? Maybe something somehow involving what scientists call "dark matter" (some enormous majority of our universe is made up of matter than can't even be detected or measured, but we know it's there because of the way "normal matter" reacts to its presence)... read: alternate universes? The sky really is the limit here and I encourage you guys to be as creative as possible.
That said, I still would like it to have that Star Wars "feel" but have it coupled with FS2's general all around brilliance in all aspects. The classic ships are of course a must (Tie fighter, x-wing, y-wing, a-wing, tie bomber, star destroyer etc...), and while I'm on that I'd really like to see the ships act completely differently. Tie fighters of course don't have shields, but they should be VASTLY more maneuvarable and faster than the rebellion ships.
I do want it to be in either the episodes 4-6 era or the EU universe though (but like I said the campaign doesn't need to, and even shouldn't copy the main story of the movies/lucasarts games)
Oh and if there's to be only one campaign (initially), make us play as the Imps! Playing as the bad guys always lends games that extra edge