From what I heard, the people wanted raw and original, so that's what GL released. 2.0 sound, shitty picture, happy 1977.
By the end of Blu-ray's life it'll just be all digital from then on, so we'll get the 3D versions (which will never be 'the original versions'). If he releases an HD version of the 1977 cut, even for fans who really want 'the originals' I wouldn't see the need for anything beyond that. But whatever is next would seem like overkill, what's a 2K version of the 1977 cut really giving you?
If he doesn't release that people will say what you just did. If that comes out, people will of course complain they have to buy it again and that GL is just cashing in. The guy can't can't win.