Just got back from it and thought it was very good, I think those saying it's the best since Empire aren't being extreme but, really, at the same time saying such a thing isn't really saying a whole lot.
I think a couple of moments in it were kind of... "cheap" and cheating a bit, using the mysticism of The Force and that we don't "really" know its limits and what it can and cannot do. A couple of the big reveal moments also to me seemed to be a momentary surprise but only to lead nowhere.
The little gerbil things all over the trailers, thankfully, weren't overshadowingly and annoying like they seemed they would be in trailer. At the same time they're clearly there only to sell plush toys (just in time for Christmas!), I much more liked the look and use of crystaline dogs. The visuals on the red-salt planet was also really cool. (I wasn't sure what to make of that from the trailers, to me it looked like some kind of exhaust from the spacecraft but it being the disturbed salt from the ground made it a neat looking effect. The next-generation AT-ATs were also under-used and were just sort of there as a call-back which, thankfully, this movie didn't do too much and probably the lamest bit of it was the "blue milk" thing, (And thank you, PG-13 rated movie, for showing me the plump, round, shapely four tits of a CGI creature. Heaven forbid a PG-13 movie show us a female human's bare breasts (well I guess one movie can in a non sexual context) but we can see four CGI ones. Would it really have been that hard to make them look more like the udders on a cow instead of like actual boobs on a human female?)
There were also a couple of beats that were played to a dramatic crescendo only for it to be cut short.
Kylo Ren was good and more compelling in this rather than the little bitch in he was in Force Awakens.
Mark Hamil does an awesome, awesome job here.
Daisy Ridley also does a very good job but some of her stuff has her sort of in a stationary orbit like Luke in Empire.
The side-quest with Finn and the other chick was kind of a waste of time, it was part of the story and movie and all but it sort of felt like the movie almost screeched to a halt when it cut to them and, really, it sort of ended up being for nothing.
Great work by Fisher here, RIP.
So, for a grade I'd probably would go with an A-. It may be a bit long in parts, but it doesn't retread old ground like TFA did (replaying A New Hope) and there are some good surprising, clap-worthy, moments in it.