I think Rian Johnson is an interesting director. There are parts of TLJ that I absolutely love and other parts that I can’t hardly stand to watch.
But if I may make a prediction: I don’t think Rian Johnson will get further than one movie into his trilogy (if he even gets that far) before Disney shuts it down. I just don’t think there’s a very large desire for another Star Wars Trilogy among casual movie goers. And among Star Wars fans I don’t think there’s a very large desire for more Rian Johnson Star Wars movies, especially if he goes back to the same playbook of story elements he used in TLJ.
I hope I’m proven wrong and that he creates a wonderful, interesting new trilogy that does gangbusters. I think he’s a much better writer/director than The Last Jedi would indicate.