Hmm a kinda jedi civil war. Would be great subject matter for a TV show.
I always imagined Snoke as a Palpatine figure, someone hiding in plain sight, kind of a wise mentor to Luke and a friend of the Solo family, perhaps even aiding in teaching the jedi at the temple, a hidden poison, slowly but subtly corrupting Ben solo and some others until ultimately causing a split. In the aftermath Luke would confront him, leaving him for dead. Hence the deformity.