It would make Kylo’s line in TLJ about wanting both the Sith and the Jedi to die make more sense if Kylo was somewhat aware of Snoke’s affiliation to the Sith Cult.
You could even describe Kylo’s quest early on as him hunting down the remainder of the Sith Cult to eliminate any threat to his power. That would more clearly depict the people he is slaughtering are the beginning of the film as Sith followers.
If you went with the crystal illusion idea, how would Palpatine sucking out Rey and Ben’s life force be factored into it?