I had a thought today about a potential edit.
When Ray is about to axe palps, what if we could rotoscope in Mark Hamill from the last Jedi scene (when he says see you around kid just before disappearing) color him to look like a force ghost and place him in between Ray and the Emperor within the energy feedback loop?
It would be a good visual of Ray being assisted by the last person to actually bear the name skywalker, and would be a satisfying payback is a bitch moment for Luke. He helps barbecue the guy who tried to do the same to him.
Just a thought.