Here’s an idea: how about every scene in space has no sound effects? So it’s a little more ‘sci-fi’. I don’t know, it seems like something Tarantino would do.
Of course there would be intense rumbling in the cockpits, but the actual shots in space would have nothing (think of Interstellar).
JEDIT: I’ve also been thinking about replacing all laser gun sound effects with actual gun sounds. And maybe giving Dooku/ some other character spurs.