One thing we'll hopefully get in THE LAST JEDI is the extent to which Luke Skywalker's mastery of the Force has advanced in the thirty years since RETURN OF THE JEDI, but what you expecting Luke's mastery of the Force will be, especially vis a vis past masters such as Yoda, Obi-Wan, Mace Windu, Qui-Gon Jinn, and of course Luke's own father, Anakin?
Buried Alien (The Fastest Post Alive!)