Ah, Nataku's Ep 7,8,9 just reminded me of something... did anyone else read the rumors several weeks back that some prequel actors, like Peter Mahew, had signed on for additional Lucasfilm work in the future? Some were speculating that it was in fact 7,8,9.
My own theory is this: After EIII, George Lucas intends to release control of the SW universe and allow it to become a serial series. It would NOT be sequels in the Saga proper, but peripheral stories, much like the books do now. In some way, the Clone Wars cartoon is the first experiment with this. This would allow one-off movies and be handled by other directors, produced by George Lucas. Finally other directors, like Steven Speilberg, could explore stories and characters within the structure of Star Wars universe.
That way we could get a Boba Fett movie and just about anything else imaginable while still preserving the GL series as the "core" storyline.
A fanboy can dream, right?