The movie’s already pretty long, so if you add even more Ach-To stuff, why not just center the whole movie on that, since it looks like it’s the only part anyone cares about, and cut the rest? Not something I’d do for a definitive cut, but it might make an interesting alternate cut.
Yeah, there have already been a few edits along those lines, placing the emphasis on Luke by cutting the mutiny subplot entirely. I don’t think anyone has done an edit removing the Resistance completely though, and I doubt the movie would make sense without at least a few of those scenes.