I read the final dossier of Twin Peaks and I have to say the ending to me seemed kinda like a letdown, inter-dimensional Judy saw everything coming and diverted the timelines so Dale Cooper and Laura couldn't come back was fucking stupid.
To really tie the whole gang back together and this would have been my take would've been as soon as he saved Laura she woke up with Donna (Laura Flynn Boyle) and somehow Leland/Bob entity would have been either exorcised or faded into dust.
Or after saving Laura Palmer it was somehow tied into and X-Files case and instead of it focusing on just Leland and Laura it originated in Twin Peaks but was a menace to the rest of the country and the FBI gang Cole, Cooper, Skully, Mulder could hunt or try to solve this existential crisis as with a mystery.
It'd write itself practically.