Here’s how that might look:

Rey: “I saw myself on the dark throne. I won’t let it happen, I’m doing what you did.”
Luke: “I was wrong. Pushing Ben toward that throne was my greatest fear. What are you most afraid of?”
Rey: “Myself.”
Luke: “Because you’re a Palpatine? He has no claim over what belongs to the Force. That is for you to decide. Some things are stronger than blood. Confronting fear is the destiny of a Jedi. Your destiny, if you don’t face Palpatine, it will mean the end of the Jedi, and the war will be lost…”

This helps make Rey taking on the Skywalker name a heck of a lot better, so I’m down with this change even though it forgoes some Palpatine shenanigans.