I actually wouldnt be opposed to redoing a digital yoda in ESB and ROTJ, since the ROTS was so incredible. The AOTC yoda sucked, but after seeing what they did in ROTS, and seeing the puppet replacement in TPM with the digital one--it changed my mind. However, i would only approve of redoing OT Yoda on one condition--the O-OT is released to preserve the original. Because, yeah, its not THAT necessary to redo the OT Yoda, and the articulation gained is not worth losing the historically-important (and nostalgical) puppet Yoda. Really, the SW films are all completely different from when Lucas first made them so whatever he wants to do to tie them all together is fine with me, but the only way i think myself and many other fans could totally accept stuff as extreme as redoing Yoda is if the originals were also made available. I think both of these things are actually very likely to happen! Redoing his voice though? No need, really. There would inevitably be a tradeoff in performance, and besides the fact that the PT dialog is worse, the only reason Lucas would consider redoing Yoda is because he was fighting the technology and what is seen on-screen is somewhat of a compromise (in the first draft of ESB Yoda even fences with Obi Wan! Imagine trying to do that in 1980). What is HEARD on screen however is as good as can be, regardless of technology, and i think Lucas has been more than satisfied with Oz' vocals for the originals.