I waited to see it until my family was in town and we could all see it together on Christmas Day. I've been slowly working my way through this thread ever since.
I won't rehash all the specific problems with the movie that others have discussed ad nauseam except one, because it nicely illustrates my big picture problem with the movie: Force-flying Leia.
From the beginning, the magical thing about the Star Wars universe has been the Force. And part of what made the Force so compelling was that is was mysterious. Not everyone could use it. Jedi underwent years of training to be able to use the Force. The Force wasn't something that just anyone could use on the spur of the moment. Like Han told Finn in The Force Awakens, "That's not how the Force works."
Only, now, I guess it does. Leia, someone who has had no Jedi training, and shown no Force abilities other than the ability to sense feelings, suddenly and inexplicably has the ability to fly through space. That scene really bothered me. If they just needed to get Leia out of the way temporarily, they could have easily just had her get injured in an explosion and fall into a coma. They didn't need her to be blown out into space to set up Holdo taking command. Meaning, they really wanted to show us Force-flying Leia. Why? It's not to advance the you-don't-have-to-be-a-Skywalker theme since, you know, she's a Skywalker. It seems like they just really wanted to illustrate "Oh, yeah, she can use the Force now, too" - without needing any of that fancy Jedi learnin'.
Which is, of course, what they're doing with Rey, too. She's had, what two days of half-ass training? After The Force Awakens we were all assuming that the only way to explain her abilities, with no training, was that she had some really strong Jedi (or maybe Sith) ancestors. But The Last Jedi seems to make it clear that, no, you just don't need to have any training to use the Force anymore. Like the 6 year old slave boy at the end who is Force-pulling the broom. In their effort to, I guess, democratize the Force, and take the focus off the Skywalkers, they've decided to totally ignore, really rewrite, the rules of the Star Wars universe as they were established in all the preceding movies. And if they follow that thread where just about anybody can use the Force at any time, the Force becomes a lot less mysterious, and the Star Wars universe becomes a lot less interesting.
That ticks me off. You want to take an unexpected turn with Luke's character? Okay, great. You want me to stretch my suspension of disbelief by having Finn end up in the same jail cell as the one other guy in the Galaxy who can get onto Snoke's ship? Okay, I've looked past some implausible stuff with Star Wars before. But, good grief, is it too much to ask that you observe the long-standing basic rules of the movie universe in telling your unexpected story?
EDITED because I can't spell.