I still think it would be worth having it so that Luke tells Leia who Rey is as a ghost. So it could go:
Luke: “Because you’re a Palpatine. I told Leia after I joined the Force.”
Rey: “She didn’t tell me.”
Luke: “She wanted you to believe in yourself.”
Rey: “She still trained me.”
Luke: “Your choices define you. Your heart. Rey, some things are stronger than blood. Confronting fear is the destiny of a Jedi…”