Episode 1 should be quite "simple" - all we need is to take the official BluRay, replace the scenes with Yoda with the colour-corrected HDTV capture, cut out all added scenes, and re-create the transitions using an upscale of the TB capture. The original 5.1 DTS track was released on some LD in Japan if I remember correctly. But I'm not sure about the cropping

Episode 2 would be more hard to do - the main problem is that we don't have (or "I" don't have) any good quality version of the changed scenes. When I did my theatrical version of E2 on DVD, I used an upscale of the VHS, and it looked stupid even in DVD resolution. Does anybody know a better source for the scenes than my old VHS ?

Episode 3 is the easiest to do, if the "experts" are correct it would be enough to mux the video from the BD with the audio from the DVD