Star Wars works thematically as well as Avatar IMO (which isn't very well at all). However, IF Star Tours were moved, I would prefer it over Avatar at DAK.
To me, the whole Avatar idea (or whatever) looks like they're forcing creativity. Animal Kingdom needs to be finished more than "plussed." I don't know why they couldn't add a continent type environment/area (Australia or either of the Americas) in the area between Africa and Asia then fully build out Dino-land (so long Chster and Hester) before Uni does Jurassic Park. That would round out the park substantially without forcing a theme other than "Disney's Animal Kingdom" which, for me, is enough. It's a beautiful but incomplete park; just finish it!
How does Star Wars fit in thematically with DAK? (Or did I just read your post wrong?)
Avatar has the conservation aspect going for it...
I'd like to see Star Wars take up an expansion plot at DHS (If there is one!). Create an entire area (much like Carsland at DCA)
Entrance to the land could be the Tattoinne Desert...which could transition to the forest moon of Endor...and finally transition to the snowcapped Hoth.
Attractions:
Speeder Bike Coaster through the forest. "Motorbike coaster" with near misses of trees and troopers trying to "take you out." AT-ST walkers could be "firing" at you also.
Pod Race Simulator on Tattoine. Hop into individual pods (4 person vehicles) and have the entire attraction linked so each simulator reacts to the others movements. Racers have complete control of steering, boosters, braking, and weaponry. Courses will change randomly. People that aren't racing can choose to be spectators and watch on a giant screen...or become part of the action and try to disrupt the racers from the hilltops.
Ewok Dinner show...much like Hoop-Dee-Doo.
Mos Eisley Cantina.
Multi-sensory Snowspeeder attraction which utilizes 3D video screens, live sets, and giant animatronics. Snow, wind, fire, etc.
Family "Dark Ride". Interior/Exterior dark which takes you on an exploration of Naboo. The attraction could show scenes of the battlegrounds where all of the Droids "stopped working" and it could be narrated to tell the story of the "chosen one" who, even as a boy, saved an entire planet. As you move along, you could go under the sea and explore the Gungan world...and the climax would be a travel through the planet's core.