I have always been in favour of FX cleanups, etc. - a "de-assified" Special Edition if you will - without all the story/characterisation changes. For instance, getting rid of garbage mattes on TIE Fighters and matte-lines in snowspeeder cockpits, but without the torture of CGI Jabbas, distracting extraneous (and annoying) musical numbers, etc. But having said that, from what I've seen on the Preservation Boards, perhaps this kind of endeavour is best left to people outside of LFL. It seems that LFL is in favour of weird RGB settings and other corner-cutting "clean-up" techniques. If we do get the raw source material on DVD, it would be a world of help to all those preservation efforts out there - or would it defeat the purpose?
Perhaps another theory can be formulated - maybe they'll release the bare-bones OOT this time around, and save a cleaned up OOT for next time?