When I said that MAYBE CGI could replace live actors, I meant that the technology would be available for one to do so, but it won't really happen, because it's kinda difficult for a director to tell the animators how to make that character perform. Besides, you'll always need voice actors - unless you use synthetized voice, and that would be insane.

Did any of you see the "behind the cameras" footage on the AOTC DVD? There's a scene in which GL is trying to have Yoda perform perfectly in that "begun the clone war has" scene, and he asks the animators to do it again and again... And he's all like "aww guys c'mon... he's not supposed to be sad". Reminded me of Kubrick trying to get 200 takes of Shelley Duvall in The Shining, but instead of being a brilliant, insanelly perfectionist director, he's just an idiot with a hard-on for CGI.