I don’t think it works because it undermines everything Anakin did of bringing Balance to the Force. I really wonder who “Uber” was in George’s treatments.

I think Snoke had the perfect set up to return in Episode IX and even be Plagueis. Especially as he told Kylo “You wonder why I keep such a rabid cur in such a place of power, a cur’s weakness properly manipulated can be a sharp tool.” He easily could’ve had himself “killed” to take himself out of the conflict as it divides the First Order further as Kylo and Hux clearly don’t know how to lead and with the Resistance already weakened it opens the door for him to invade the galaxy with the Knights of Ren, his army he was building up during the events of the PT and OT. All while searching for the secrets to immorality and perhaps the essence of Rey and Kylo could be that key as she’s the Light to Kylo’s Dark and together they must defeat him. You could even have him declare he and Palpatine created the Empire as a partnership after influencing a Jedi master to create a clone army all those years ago.

It even gives Finn the chance to lead a stormtrooper revolt.

The First Order and Resistance versus the Knights of Ren.

This ultimately keeps everyone’s legacy in tact yet adding the final layer of giving everyone a part to play in the final battle and defeating the ultimate bigger fish!