In response to ...
Speaking as someone who likes The Last Jedi because I think that the good scenes outweigh the bad by a comfortable margin, I still think that there are a number of problems with the movie. I don't see Rey as a Mary Sue, but as an unexplained mystery, where the fact that they haven't explained anything about her is frustratingly annoying. Because of this, it feels like there are giant holes in these two movies. The optimist in me keeps hoping that the third film will fill in the gaps in such a way that it will all make sense. In fact, I think that this is what will happen, or needs to happen for the franchise to save itself. There have been all sorts of hints that Rey may be more than she appears. Maz asks Han, "Who's the girl?", as if this is the pivotal question of the entire trilogy, and I think that it really is the pivotal question that needs to be answered. Adam Driver in an interview said, "You have, also, the hidden identity of this princess who's hiding who she really is so she can survive." What would satisfy me is to find out that Rey is Luke's daughter, who he thought was killed in Kylo's uprising, hence his strong emotional reaction at the devastation. He couldn't sense that she was alive because he had cut himself off from the force. Just like The Empire Strikes Back, I think that they went to Mark Hamill and said, "Only two people know this, and now we are going to tell you, so if it leaks we will know it was you." And what secret would they tell him? Something about who Luke is related to.