I heard, Luke is going to fvck off to the Dark side. He's going to be like, "later bitches" and that will leave Rey as the Last Jedi. It's going to turn out that Rey is Lukes daughter and he molested her during her force training when she was young.
That's why he hazed her memory. When she remembers this she goes nuts and turns to using Dark force powers to kill her dad. Snoke makes them fight and starts training Rey after she kills Luke. Kylo Ren starts banging his cousin and eventually gets her pregnant. Out of his guilt he decides to embrace the light side and must hunt down and exterminate his forbidden seed. Yeah, this comes from a legit source so...,