I would've liked the movie more if the soundtrack was more, variant I suppose? It feels like the Force theme played WAY too many times throughout that movie, Jesus, it's supposed to be saved for the REALLY important movies.
My biggest gripe was the antagonists... Kylo was just so, puny. Pathetic. A weakling. He and the First Order were a bunch of knock offs of the greatness that was the Empire. The Empire put fear because they may have been space nazis, but they were fearsome, outside of their shooting, by never losing their grip. Never losing control. The only reason the Rebel Alliance won was because they hit the Empire hard and fast (movie canon) without letting a massive war drag on. First Order, bunch of people with a stupid idea (Starkiller Base AKA The Death Planet) who had to scream everything.
And the final fight with Kylo... GOD FREAKING DARN IT THAT WAS BAD. Kylo should've finished that fight a lot quicker and killed Rey and Finn, or Rey should've killed him. Kylo should not have lived thanks to dues ex machina. Seriously. There's no logical way he could've survived the fight, but they wouldn't have had the planet just open up to conveniently spare him if he couldn't get off the planet before being vaproized by the fact it turned into a star.
Finn was great though. Silver lining. Love him. I was like "Black Stormtrooper protagonist Jedi? That's stupid." But dude, was so cool.