With the Last Jedi he solved the question the first commenter here asked, being "Can SW be SW without Sith/Jedi?"
Which was really "Can SW be SW without a Skywalker?"
And the answer is YES.
I wouldn't be surprised if one of the goals for The Last Jedi (be it Rian Johnson's own goal, or that of the producers) was to pave the way for future Star Wars movies with all new characters while still being able to show lightsabers, Jedi, etc.