TL;DR: Maxon is still precious. America is maybe slightly less stupid. And when you've pushed through 2 books you just need to finish the damn series. 
 Reasons I was determined to read this book: 
 1. I wanted to see Maxon happy because he's precious. 
 2. I was really, really hoping the king would die. 
 3. I just needed it to be over. 
 I'm gonna be honest with you. I pretty much skimmed the entire book for important info and dialogue. I "read" the book in about 2 hours. I just needed to get to the end. And I was really happy with the ending. After everything that happened I do think the final "choice" was done well. And, as I suspected, the rebels were finally brought to the fore of the story. I actually accidentally sped through the big climactic scene in my hurry to get to the end, and I did go back and legitimately read that part. (view spoiler)[ Which was good because I completely missed the whole Celeste getting shot through the head thing. I JUST STARTED TO LIKE HER TOO I SHOULD HAVE KNOWN. I also thought it was pretty crappy that instead of resolving the conflict between Anne and Lucy over Aspen, Anne was just killed off. She deserved better than that. I hate when characters are killed just to avoid resolving their story lines. (hide spoiler)] 
 I think I liked this book the most out of the three. For once I was pretty impressed with how America managed to stick to her values while still playing the game. She has a successful clever moment. Two thumbs up there. I still feel like the constant resolution followed by another thing going wrong was a bit too much. It was already frustrating and repetitive by the end of book 2, so the fact that book 3 still kept doing it over and over again was just really annoying. There had to have been better ways to keep the story going other than having America and Maxon decide for realsies this time only for another stupid thing to happen that separated them again. If that was really all the story was going to be, it really should have been much shorter. One book would have sufficed, I think. 
 Obviously this was not my favorite series, but the ending was cute and I do like how America and Aspen's relationship was handled. At the same time, I have no intention of reading The Heir or any of the other books that come out of this series. I am officially exiting this universe.