I think a few people have thought about using this as a source for an HD 70mm recreation, since this source appears to have the 70mm audio/video differences in it. The problems are that since the source is incomplete, there may still be 70mm differences for which we don’t have any sources, and that the quality is so low that mixing it with better-quality sources would be pretty nasty. I think the 70mm audio mix is way more interesting than the video–I can completely see why they changed them, but it’s nice to hear the lines that actually match the onscreen lip movements, for example.