In regards Rian mischaracterizing certain characters, I don't really agree. I think it's very much in line with ESB with how these characters are separated from each other and really forced to grow. Only in ways we aren't typically used to. Poe is deprived of catharsis, Finn's fear is doubled down and forced to learn another lesson from someone braver than him, and Rey...I think she may have the best arc out of everyone in Star Wars besides Luke Skywalker himself in the OT.
I won't say a lot because I feel like the discourse around this film has been beaten into submission already because that's just the nature of the pop culture regeneration cycle these days. But the one thing I will say is that how I love this truly feels like a movie about Rey and Luke first and foremost. I think the movie delivered on the promise of TFA with regards to their relationship, only in ways we wouldn't expect. (Or not, I can think of countless gruff, elderly sages who reject the pupils that appear on their doorstep because of certain shortcomings in their past. I actually wish that prank that Luke pulled on Rey in the film made the final cut, I really like antagonistic master-pupil relationships.)
Rian also probably gave Mark Hamill the role of his life playing this new version of Luke Skywalker. (I mean, besides being Luke in the OT) Like Logan, I appreciate seeing these heroes and legends at their rock bottom, though in the case of Luke he went out after the greatest display of The Force in these films. Hell, even in the cartoons.
The fundamental demystification of the entire Skywalker lineage is I think what makes this film really work on an emotional level for me. Luke is a failed master (at least until the end), Leia and Han are failed parents, and the right to dictate how the Force, the Jedi and how anything operate should not be solely theirs. It's what makes the revelation about Rey's parentage all the more affecting, and fits in thematically with characters like Finn, Rose and Paige. There is no Chosen One. Rey must carve out her own place in the universe and the rest of characters of the new trilogy cannot rely on a Skywalker to help them.