Luke calls her Rey Palpatine, so that would have to be cut around.

Instead of a Rey Palpatine story, the narrative could be changed to where Palpatine shows Kylo a vision of Rey’s future, and it is her as Sith Empress. Rey sees it too, which is why it scares her. Maybe he says he saw a vision of her sitting on a throne next to him. Which causes Rey to call him a liar and such. You could replace the visions of the past with visions of the future.

This is my train of thought. Palpatine could reveal to Kylo Ren that he made Snoke, AND he made Vader, revealing he created Anakin and in effect making Kylo his heir. But, he wants Kylo to kill Rey because he has seen a vision where she destroys them. Kylo has other plans, and when Palpatine senses that Leia has turned Ben’s heart, he decides to try and use Rey as his new vessel.