If you incorporate the EU idea that Papaltine has a slew of clone bodies to inhabit, he can still "die" as usual. There's at least one movie you could borrow footage from to show him waking up in a new body to end on a ominous note. (Judge Dredd comes to mind.) There must be a couple other films with clone labs in them?
I like the idea of Wookiees replacing the Ewoks, but there may not be enough footage from ROTS to make this work.