Yeah’ I’ve been thinking about this a bit.

Rey: Why did the Emperor come for me? Why did he want to kill a child? Tell me.
Ren: Because he saw what you would become. You don’t just have power. You threaten his power, like my grandfather. You’re surrounded by a vergence in the Force Rey, the most powerful nexus of Force energy seen in the galaxy since the death of Darth Vader, all those years ago.

For years, I’ve been chasing his power, and all this time it’s been right in front of me, in you. I may be his grandson, but you’re Vader’s true heir. Palpatine fears your power, Rey. We’ll kill him, together, and take the throne.