Would it be possible to have audio of a Snoke and Luke dialogue as Rey is in the force cave of mirrors? I mean, could we make that scene into something like the vision from The Force Awakens where it actually conveys some story and reinforces why Rey wouldn’t trust Luke?
We get a hint from the novelization now that Luke sought some comunication with Snoke, in order to gain knowledge of the force, and I I thought why not use that to the advantage of the story?
I was thinking we could repurpose some of the more corney throne room dialogue of Snoke, and some of Luke’s dialogue, and maybe make some banter between the two?
Snoke: “Skywalker, so wise! you think you can turn him? Foolish child! He is heir apparent of Darth Vader, the balance of the Darkness and the light.”

Luke: “I failed you Ben, I’m sorry.” "I thought I could stop this, I was overconfident, I was “Luke Skywalker.”

We could literally modify the whole reason’detre of Kylo turning to the dark side. Rather than it being because there was darkness in Ben, we could imply that it was because there was actually a kind of balance in ben, and yet both masters, Luke and Snoke want to pull him to one side, their side. IE Overconfidence is Soke’s weakness, Luke’s faith in his friends is his.

IE Luke’s failure is not in wanting to kill Ben, but in underestimating the turbulence of the darkness as combined with light, and in thinking that he could control it.