To start, it's a good film. There were bits where the audience cheered and clapped (e.g. Snoke's death) and to me that's a real harkening back to those first films and their sense of adventure and ability to get audiences to care about the characters.
It has moments where it touches the original trilogy, but overall is probably the 4th best SW films ( with ANH as the best, ESB as number 2, ROTJ as number 3 and TLJ as number 4, the prequel films are rubbish and don't even make the top 10, as the next best SW stuff is SW:Rebels - as for TFA, IMO it was just a regurgitation of ANH, and while the cast were good, it loses a lot of points for a complete lack of originality).
Okay, so there were a lot of things I liked
1) Luke: Mark Hamill shone in the role as a broken, conflicted Luke Skywalker - and Johnson gave him solid lines to bring that anguish out.
I loved his speech about hubris and legends - because of course it's prophetic and he does indeed stare down the entire First Order by himself.
For me, when a beloved fictional character dies it really should be something special. I don't feel bad about Luke's passing (I mean, he'll be back as a ghost for sure) because it was so well done, and he went out saving everyone. It was a grand exit.
"See you around kid." was perfect.
That last sunset was such a nod back to the twin sunset scene of ANH, terrific fan service there and very fitting.
To me, Luke was the best thing about the film - and yes, they did pull the whole trick where he disappeared for most of the third act and then shows up to save the day, but boy did it work.
And of course there was good chemistry with Daisy Ridley, so there's a bonus
2) Rey: She developed some more depth in this film, a bit less of a talking plot device and more of a character.
3) The Rey/Ren bond: this was one of the best things in the film, because it worked. I kind of see them as the Neo/Agent Smith type relationship that they grow stronger because of each other, and while they are opposites they are connected. It worked, big time.
4) Kylo Ren: there are moments where he's a terrific villain, and Adam Driver does a lot with just a look, he's good at conveying his emotions. His bow legged walk I find a bit distracting, but generally he's menacing enough - and in a nice change from previous SW villains a bit complicated, as in there may indeed be good in him and he and Rey's relationship is not a simple adversarial one.
He throws less tantrums than in TFA, but had a couple of moments where he came across as a spoiled child - However, for the most part I felt him a worthy villain.
Laura Dern was good in her role, although the costume was terrible - but she too had a grand exit, which worked really well ( nicely filmed too).
The humour was pretty decent, and I liked General Hux as the First Order's resident punching bag - that was funny.
No actual lightsabre duels but a kung fu lightsabre battle against the red-suited guard ( a big cheer went up when Rey tossed Ren the sabre and he put it through the helmet of the guy who was choking him).
Some good fan service: Luke's final sunset, "here they come" music motif from the original series, the "help me Obi Wan Kenobi" hologram, Yoda's cameo... stuff that true fans will have seen and appreciated.
And on the other hand......
There's nothing that I thought was poor or crappy (so instantly a big step up from the prequel trilogy) although the storytelling in the first act bounced around a lot.
However, there were a bunch of things I found simply unnecessary or just neutral ( as in they didn't diminsh the film, but were "just there")
The whole Finn/Rose side mission was ultimately pointless and a distraction from the more important character interactions.
Did this film really need Benicio Del Toro in it ? No.
It could have been at least 20 minutes shorter and been just as good or better.
I still don't get the rave about Oscar Isaac, any number of reasonable character actors could have pulled off his role in this film.
Snoke.....well, he was really just a plot device to get Rey and Ren together, although I liked how effortlessly he dealt with Rey. My one gripe about him was that he felt like Palpatine-light, twice the scars but only half the evil.
I mean in ROTJ when the Emperor's taunting Luke, the whole audience is just begging for him to die - whereas Snoke is just more annoying (and a little bit Gollum) there was cheering and clapping at his death ,in the cinema I was in, but I didn't really find him particularly captivating as a villain.
I'm glad he's out of the way.