At this rate, there are probably only a few occasions to really be concerned about legal action… or during/after an official release of the OOT (if they feel the DeEd could harm sales of a product they’re finally trying to sell).
I love Harmy’s versions. But man, they’d have to really butcher their own release in order to make that a valid concern. Still, they may find a way to manage.
EDIT: Oh, you’re talking about a Disney OOT release. Yeah, assuming that very improbable scenario ever comes to pass, the vast majority of the general public will probably be happy with Disney’s 81 crawl/93 audio upmixed to Atmos/bad color timing release, and we’d be an even smaller minority of Star Wars fans than we are now.