I’ve got two things to ask.
First, is there any way we can try to alter Palpatine’s motivation when Rey arrives on Exegol? Throughout the saga, he has always been interested in cheating death and immortality. Wanting Rey to kill him only so she can take over the new order and follow in his footsteps because she’s his granddaughter is way too out of character. Maybe alter the scene so that he is trying to make her give in to the Dark Side like he tried to do with Luke in Return of the Jedi.
Then it’s just a repeat of RotJ. What we should do is focus on the cheating death aspect. He wants Rey so he can take over her body. Could that be conveyed through existing dialog?