See I don't mind the idea of animations if done properly. However, I don't think they would ever bother bringing the original actors back for the roles because they can hire people who sound a bit like them for a lot less, which means recasting anyway.

The reason I suggested live action is because I think there are some good stories that fit within the original trilogy timeframe that they could potentially turn into a series of EU films. For example Shadows of the Empire would make an Episode 5.5, Splinter of the Mind's Eye could be a good Episode 4.5, and I would even go as far as to say using the rough outline from The Force Unleashed could make a good Episode 3.5 (though I wouldn't be too bothered with it fitting between a prequel film because I would like to see these completely redone). To be honest though I haven't read much else when it comes to the EU stuff but from what I have read these did strike me as having a good Original Trilogy feel to them.

The only one I can really think of a good casting for though is Charlize Theron for Guri, though I would prefer to go with someone a little younger now. Likewise if they had been filming this around 1998 I would have said Lena Headey could make a good Leia, but again I think they would need someone a little younger now.