I wouldn't doubt that if the Star Wars movies are released on Blu-Ray, they would be the highest selling Blue-Ray disks ever. I often wonder why Lucas is waiting. I've got several of the movies saved on my HD DVR and in HD they look awesome. I can only imagine what they'd look like in Blu-Ray 1080p.
He's waiting for the same reason he waited so long to release Star Wars on DVD: he wants there to be tens or even hundreds of millions of players in use, so that when the Blu-Rays are released, they'll sell millions of copies.
History tells us that most of a given title's sales come within the first 6 months of its release. By waiting, he can earn hundreds of millions of extra dollars and maintain the Star Wars prestige. I don't like it anymore than anyone else, but I understand it.
I haven't got a Blu-ray player, but I definitely would buy one just for the sake of Star Wars. I wish they would have the whole lot of all six movies released as a sextology. But if they did I wish they would clean up Revenge of The Sith. I have ROTS on SD-DVD and never liked the purplish pink overtone like in the scene where Anakin talks with Palpatine with the ballet going on. But just the Original Trilogy would work for me. But the Original Trilogy not the Special Edition versions. I know that all of the loyal fans were irked by the pink blade of Vader's lightsaber in those, due to bad color timing. And with Blu-ray they change the aspect ratio in them and not have them in letterbox like the SD Widescreen versions.