The acquisition of Fox has nothing to do with whether originals can or should be released. I understand why that’s become part of the narrative over the years, but it’s never at any point been a hindrance or a roadblock to the original versions being released. Fox still owned distribution rights the last time it happened, for example.
The question of “playing nice” with another company has never really been a question because Fox had never NOT played nice.
I do think the Skywalker Saga box set is maybe the best chance we’ve had SINCE 2006 for a legitimate home theater release of the originals, though, and if ever there was a time I’d suggest that it’s okay to maybe sort of get your hopes up, it’s now. But I also don’t think whatever the original versions on those disks will be, will have anything to do with Mike Verta’s fan-restoration.
If they have any interest in releasing the OOT, then it’s not totally improbable that they would use Legacy in some capacity. The quality is certainly of a high enough caliber for an official release from what we have seen. Plus Mike has already had contact with Fox/Disney after he was “approached” last summer after his presentation. See this post: https://originaltrilogy.com/topic/StarWarsLegacycom-The-Official-Thread/id/1418/page/106#1214875
But again… it all comes down to the question of whether or not Disney even has any interest in releasing the OOT in the first place. I have zero confidence in the company at this point so I will never get my hopes up again.