**********SPOILER ALERT*************
I'm going to say something that I'm sure will be unpopular, but i LOVED Last Jedi. I truly think it's one of the best Star Wars movies of all time. The only thing I had a problem with was the jaunt to the casino. It just didn't make a whole lot of sense, even if it was necessary to establish a character or 3. The movie takes all your expectations going in, all the fan theories, and dumps them on their head, which is brilliant.
When Lucas was ruining (ahem, running) everything, he wanted everything to revolve around the movie characters, and especially the Skywalker bloodline. Why is this small group of people the only ones that can make a difference in an entire galaxy? Now everyone is free to be a hero, as Rei (what with her revealed background) and the little boy at the end shows us.
I do agree about Phasma though. If you read the book, she's really not a good person in the slightest way whatsoever. They really do seem to be trying to re-create a Boba Fett thing with her, even though she's had more establishment, personality, and story in the movies alone than Boba ever had in the OT.
Just a bit of background, I have read literally EVERY single Star Wars novel released to date. I've read synopsis of the games I hadn't played, and synopsis of many of the comics. I was not at all upset by Disney excluding all this from cannon since, while there were some great stories in there (mostly Zahn & Stackpole's books), the overall EU was a complete mess.
In the EU, Leia didn't really learn the force until she was 65. That was ridiculous. Obviously she would have been Luke's first student! So her display of force powers was perfectly natural, and really, what she did was not that powerful of a display as some of the things Obi-wan did in Revenge of the Sith. It also was pretty low-key compared to things they did in the EU (even excluding the ridiculous & terrible Force Unleashed games).
Actually, what Luke does in Last Jedi is probably the most powerful use of the Force ever done (even INCLUDING tossing around Star Destroyers), so it's no wonder it killed him.
A friend & I were discussing this the other day, and we both agree that Kylo / Ben is actually a far better written Jacen Solo. Like, Jacen was a rough draft & Kylo is the finished version. His journey to the dark side is infinitely more understandable than Jacen's was.