Just saw it. Eh...it wasn't very good. Not horrible, but definitely on the back half of the spectrum for Marvel movies. A step down from the first movie.
+Hemsworth/Hopkins and Hemsworth/Hiddleston are great together and still fun to watch
+Art direction is much more interesting this time around
+Darcy is funny
+Ending cliffhanger was interesting
+
cameo was really funny; someone spoiled for me that he would be appearing, but I was totally surprised by how it happened, thought it was great
+Final battle sequence was pretty inventive and unique
+End credits sequence was very slick
-Jane Foster is setting back feminism a thousand years. I didn't mind her in the first movie, but she was almost offensively bad here, between her moping-over-missing-boy to ultimate damsel in distress. And Portman is clearly wishing she was anywhere else.
-The movie is really ugly, I think it's the worst digital I've seen since Public Enemies. Bad CGI, really poor green screen, and just bad looking shots in general. One slo-mo sequence in particular stuck out like a sore thumb.
-Alan Taylor. He did fine work on Game of Thrones, but man, he was just a bad director here. There are some things you could blame on Marvel but there were a lot of basics here, from editing to ADR to shot composition, that were just handled poorly.
-Malekith. I know Marvel essentially cut out his entire character, so it's not necessarily Taylor's fault, but there's nothing to this guy. No personality, no motivation, and no idea as to what his goal is.
-They need to stop introducing so many new characters and focus on the ones they've got. For god's sake, you have Jamie Alexander and Idris Elba, use them!
It wasn't awful, but I thought it was definitely a disappointment compared to the first. Also, Marvel is fighting a losing battle if they're going to keep trying to convince me that Jane is a better choice than Sif.