I'm not in the Kylux fandom, but you bring a good point. It's a thought I've had about the idea of Kylo "redeeming himself" type of scenarios too. There needs to be a big catalyst for me to see turn away from Snoke and if that happens, I don't see him blindly following anyone else.

This is why I like the idea of him sort of following in Luke/Kenobi/Yoda's footsteps of just going away if he's redeemed and not killed.