Savage said:
Or how about try something completely NEW for the new trailer? Stay away from fade in titles ("Every saga has a beginning," etc.), keep it non-linear, maybe (just maybe) try some music OTHER than the Star Wars score? It could work, but then again it coule be a complete mess. As long as the framework is sound, the trailer could stand out as something special and not just ANOTHER Star Wars trailer.

The only time trailers have music from elsewhere in them is the early ones before the film has a proper score to pull music from. The music is as much a part of SW as any other element. It wouldn't feel right to change it.