That's sort of an existential problem for Star Wars though. In the end, Star Wars is supposed to be fun more than anything. It's not a philosophical journey by nature, even though us fanboys elevate it to that sometimes. Trying to play with good and evil instead of just accepting them was a bridge too far for Disney, probably.

One thing that hasn't been mentioned here that was a wild departure from Star Wars tradition was the nature of the Force. Apparently, the Force is whatever you want it to be now. I'm actually ok with that. Palpatine alluded to a great Sith lord that conquered death once upon a time (who I think lots of people thought may have been Snoke), so obviously there's more to the Force than we've actually been shown in the movies until now. I think Rian Johnson recognized that and decided to have fun with it. On the other hand it took Luke tons of practice to just pick up a goddam light sabre and Rey was able to Jedi mind trick someone after someone just mentioning the concept of the Force to her in TFA. Doesn't seem too consistent :(