Basically, here is the problem. There are scenes in each of those versions that are not available in HD. All three exist as SE broadcast captures and on LD. Most of each made it thorugh the the DVD and Blu-ray releases unchanged, but several scenes needed to complete the HD versions are missing. Some scenes that were later updated in the DVD or Blu-ray releases could be pulled form the 35mm scans of the theatrical versions, but some scenes were updated in 97 and then changed again for the DVD/Blu-ray version and to make an accurate version you would have to upscale the SD source. That does not yield acceptable results. Especially if you are after a full 1080p version. And not only are those scenes lower quality, but they are also cropped differently (with loss of image on all sides) meaning you either have to crop the entire movie to match or do something to compensate. I also would like to see these, but until someone has their hands on 35 mm prints of these versions and is willing to scan the scenes that are unique to those versions, this cannot be done in 1080p.
I think that only applies to Jedi though. Empire could be done (I wouldn’t mind seeing it in 720p). As far as TPM, a channel I know aired an HD broadcast of the 2004 DVD release, or maybe an upscale wouldn’t be a bad idea if anybody’s willing to do it. The only other changes in TPM are added moments in the pod race and a slight alteration of Watto’s subtitles. Thank you for informing though. Meanwhile, I’ll take a look at the changes made in the '97 SEs and see what could be done, if not I guess it’s not possible.