I would suggest using the same main characters for the New Republic ( Leia, Luke, Han and Mon Mothma ), seeing they where all around at the time. For the Empire, i suggest we use Joruus C'Baoth as the Emperor, because their voices could sound very similar ( since they're both old and stuff ) and ofcourse, Thrawn as Vader. We might have to record some small wav files to use for Thrawns speech, but thats more of an advanced option we could do when we're done with everything else. ( yes i've changed the sounds before. The Length needs to be exactly the same ) ( Changing Coruscant to Wayland, and Yavin to Coruscant, so they start at believable places )