These are all really good ideas, and this sounds like a great start. I’d disagree with sade on TROS Palpatine being a clone (body) though. The first factor here is that cloning tech does exist in Star Wars, and the second factor is that Palps not only falls down the reactor shaft in ROTJ, but the entire station later explodes. Since Palps masterminded the Kamino cloning plan, it stands to reason that he thought about having backup bodies for his spirit to inhabit.
Sure, I don’t disagree that Palpatine could have clones of himself, and that his corpse not being completely obliterated is somewhat farfetched (we do see most of the DS2 intact though, down to Palps’ throne even, despite it clearly entirely disappearing in ROTJ). My key issue is that the major victory of this film is Rey destroying Palpatine, but if we’ve already established for the audience that this Palpatine is merely one of many clone bodies, there’s unfinished business. Everyone is celebrating while the audience sits there thinking “Can’t he just move to another clone body again?”.