Astner
The Ghost Who Walks
Saving graces of the film
Rey
I didn't think I'd like her as much as I did judging by the trailers. And while it's obvious to everyone that she is Luke's daughter—the lightsaber scene, force sensitivity, etc.—her backstory and her presentation as a technological scavenger awaiting the return of her family really makes her stand out among the underdeveloped rabble that surrounds her.
Chewbacca
I don't know if it's his war cries or what it is. But I really liked him in this movie, and I'm glad to see that he'll stick around for now.
My problems with the movie
First Order
Everything from Hux's speech to the colors of its banners points to that First Order is a caricature of Nazi Germany's New Order, which made them seem more like a parody of a threat than an actual threat.
Knights of Ren
Out of all the things you the director decided to keep the Sith name wasn't one of them? They are almost as iconic as the Jedi! Now I hope that there's a difference between the Knights of Ren and the Sith in terms of philosophy or whatnot, but judging by Kylo Ren's worship of Darth Vader's skull there's a good chance that there won't be.
Death Sta... Starkiller Base
This was just lazy. Everything from its set up to its destruction. We already went through two Death Stars throughout the original trilogy. There are other ways to write Star Wars.
Storm Troopers
I thought all Storm Troopers were clones that were genetically engineered to not value self-preservation over loyalty to the Empire. But clearly both Finn and his commander weren't.
Kylo Ren
The actor is ugly, and I don't mean "Holywood ugly" I mean real life ugly. But it does help that he's a Darth Vader fanboy and chooses to wear a mask even though it makes no practical sense. His doubt in his choice to follow Snoke, his desire for power and the fact that he had trouble fighting Finn and was later dominated by Rey made him come across as an underwhelming antagonist.
Interrogation methods
Since when could Sith Lords read minds? In A New Hope Darth Vader specifically called for that syringe-droid to interrogate Lea, which was a lot scarier considering that we didn't know the side-effects of the drugs that were about to be used. Instead we get a harmless magical mind scan.