Perhaps her outright tendency toward the dark will be touched on in the next film in a more compelling way?

I dunno, I guess I’m fine with Rey having the same propensity for both dark and light as the Skywalkers because at least it means they quite literally live on in more than just name. But then we have to rotate back to her just being his “chosen heir” and “a rightful Palpatine” because anything other than that doesn’t make sense in the context of the Skywalkers being no different than her. And as I stated previously, it diminishes the stakes in her confrontation with Palpatine.

Then again, it does make her and Leia’s relationship incredibly touching since Luke’s conversation with her could go as follows:

“What are you most afraid of?”

“Myself.”

“Because you’re a Palpatine. Leia knew you shared her same struggle.”

“She never told me. She still trained me.”

“Because she saw your spirit. Your heart. Rey… some things are stronger than blood. Confronting fear is the destiny of a Jedi…”

Then we’d see how Leia struggled with the same dark instincts as Rey in the flashback with Luke which caused her to abandon her Jedi path. But, again, I don’t buy that she’d ever even consider striking down Palps after such a compelling conversation like this. The only way that makes sense is if she sees no other way to defeat him.