Alot of the CGI used for the SEs looks EXTREMELY dated now. Why not just replace all the laser blasts and saber blades with new CGI to match the excellent looking ones in the PT? Hell, as long as it was a CARBON COPY, I'd like to see a CGI Yoda, just for fun, not because I think it would look better.
I dunno, it'd be fun to see him tinker with it, but not at the expense of losing the ORIGINALS even further.