Would anyone find it too weird if the likes of Bastila, Canderous and HK47 had different voices? Not too different, I would try and stick to a certain sound/tone/style, but as they are, I don't think I could ever have all their lines voiced.
I think I would like it. If the voices aren't very different, it can be explained by their age - Bastila is about 50, Revan is 60. Ten years passed since we've seen them - their voices could have changed. And HK could have new vocabulator.