This is pretty much what i'm doing myself, 'partly despecialised' high quality HD versions of the three films in the original trilogy. I've been using the blu-rays and highest quality hdtv versions I know of, the german hdtv streams, to replace bits that have been changed for the worse in this blu-ray release back to how they were before the blu-ray release, like R2D2 having those CG rocks in front of him now that he wouldn't have been able to get behind in Star Wars or those creepy blinkong eyes of certain ewoks in Return of the Jedi, to name but a few.I've also regraded the two sources so they seemlessly blend together.

Of course I have implemented many others changes like removing Jabba from A New Hope, making Han shoot first, getting rid of the silly CG antics when they enter Mos Eisley, removing Jedi Rocks from Return of the Jedi and reinstating Lapti Nek, removing many of the OTT celebrations at the end, in particular the ones from the prequel worlds which have no place in the original trilogy IMHO. especially Naboo with the 'Weesa Free', removing Hayden Christensen and reinstating Sebastain Shaw etc. etc.

I assumed there wasn't much interest in something like this, essentially getting rid of the bad specialised choices but keeping the good ones, but if there is, I suppose I could start a thread much like Harmy's one here, sharing what i've done. I don't know if me starting a new thread is against the rules here, me being a fairly new poster and all. If it is, apologies.

BTW Harmy, I think you were right about the blu-ray itself being a little underexposed. I've been experimenting with increasing the brightness and it does help. One problem i've run into is that some highlights tend to get blown out in certain parts of the three films. Have you got any suggestions on how to get round that?