hairy_hen said:
For Empire and Jedi, 70mm recreations aren't strictly possible, but the '93 and 5.1 soundtracks on the previous versions already sound great. I've been considering doing small revisions on Empire, to substitute the hacked up music cues with how they are in the SE and add the missing snowspeeder sound, but those are only minor changes. Jedi I believe I am quite satisfied with as it is.

Related question: What are the differences (if any) between the 85 and 93 mixes of ESB?

And can Puggo's super-8 capture of ESB be used as a source for any 70 mm sounds?