I agree completely with THX's every statement. I did the same thing after seeing Episode 3 and I found the same problems. The current Empire Strikes Back looks very modern even today, and I'd never go for a CGI Yoda. I think some scenes could be spruced up with better special effects so it matches the prequels, which I'm sorry to say guys, is not nearly as bad as you think it is, especially compared with the original trilogy which has been placed on a pedestal of perfection. They're just movies! I don't think I've stayed awake or sat through through A New Hope since I saw it for the 49th time. Great story. Great characters. Wonderful movies, but not perfect. I'm open to any progression.
About Obi-Wan, McGregor looks and sounds like Alec Guiness more than I could ever imagine. That dude's crazy. CGI Yoda looks damn good, and they need to replace the TPM puppet. Never looked for moved right.