The Dooku/Seperatist theme was almost a theme, but not quite, so that's cool that you'll be fleshing it out. And that's a good point about it coming after the saga is finally complete; that should give you quite an advantage.Some other thoughts on the edit:
-Rebel Scumb also inserted the music from RotJ when Luke first gets his lightsaber when the Jedi reveal themselves in the arena. I think that might really enhance the scene.
-And thinking about the lightsaber duel, maybe you could work it where Dooku force pushes Anakin across the room at the beginning? Just a thought, because I like Anakin's reckless charging at Dooku and paying *some* price for it.
And sorry I'm not able to help in any practical way, but I'll always be around as a creative consultant!