I just had an idea (maybe not new) about how to create GOUT-timed audio descriptive tracks from the SE-timed audio descriptive tracks.

You may be able to use a tool like Audio DiffMaker (or maybe even something more purpose-built) to take the SE-timed descriptive track and the SE-timed regular soundtrack and extract the differences (i.e. create a new track with just the descriptive narration and no soundtrack).

You could then slice and re-time this narration track to match GOUT timing, and then merge it into a GOUT-timed soundtrack, and you've got yourself a GOUT-timed audio descriptive track.

Assuming the whole diffmaker process actually works reasonably well, this could work really well for Empire, but there may be a large gap in Jedi during the Lapti Nek scene, depending in what's described there.

Anyway, I thought this might be worth at least pursuing. Now someone who's not me needs to volunteer ;)