I still think the final duel started off as an inside joke. I can see the story meeting right now...

"Hey, I've got an idea! Lets have a lightsaber fight in a forest! No one has ever done that before!'

I'd say you should try listening to the soundtrack to this one then. There is some really good stuff there along with the classic themes.

Rey's theme is great and very recognizable once you know what to listen for. Kylo Ren and Finn also got their own solid themes, but not nearly as developed as Rey's.

I do think that JJ's approach doesn't lend itself as well to showcasing the music as George's did. Because the movie doesn't stop to breath as much, the music doesn't feel as integral to the storytelling as it did in the other movies.

I'd definitely say that John Williams delivered. But then again, I'm not one of those crazy people who thinks he's been on autopilot for twenty years. So I would say that 

There is one shot of Chewie obviously mourning Han in between Leia and Rey comforting each other and Artoo waking up. It's fairly brief, and I too would have liked some interaction between Leia and Chewie, but it's not like there's nothing there.

I loved the first two acts. The third act fizzled fast.
1. Rey going from no force knowledge to controlling a storm trooper and then fighting a powerful dark force user was lame. Even if Ren was wounded and trying to take her alive, it seems he completely forgot he has this ability to freeze people with the force. That would have been smart, obvious, and him not even trying took him from being a powerful but conflicted character to being an IDIOT. I lost all sense of a compelling villain after that fight.

2. They repeated the third act of a new hope and rotj almost point for point: death star, bigger death star, even Bigger death star. Which would have been GREAT if they FAILED. I thought for one minute that this movie would end with the death star 3 being unharmed and the resistance (totally not the rebels) having to run for it and deal with it in the next movies.
Nope.
They win. It ends with a ship flying in through a hole and blowing it up from the inside. After the people on the ground disable the shields from the inside (due to an oddly pushover Phasma).

They could have subverted all expectations by having the good guys fail their primary mission (still saving Rey so it's not a complete downer). But they chose to repeat the old thing almost exactly.

To sum up, JJ made another Star Trek Into Darkness

It just hit me again: the bad guys built a third superweapon with a single weak spot capable of destroying the whole thing.

But that is a good point about the mind control, Praxus

Maybe we'll get some interesting backstory about Rey in the next film that mitigates it, but for now being able to use the Force with no training is a major break with canon. The prequels make it clear that Jedi normally trained intensively for years before even becoming knights. Luke got some training but more important he got guidance from Obi-Wan's ghost WHILE trying to destroy the Death Star.

It's the difference between being coached on making a souffle while you make the souffle vs spontaneously making a souffle after someone hits you with a souffle pan.