I would have wanted to read more about Sidney's point of view. When I read the Adrian's part, all I could do was to think about how is Sidney doing. There's one more book and by the ending it wasn't what I expected, but I kind of should have. 
 (view spoiler)[I loved reading about what Sidney did in the re-education facility - compound tattoo, ending gas drugging etc. I read some spoilers before reading the book, but the marriage part took me by suprise nevertheless. It made me sad and angry how both, Sidney's and Adrian's, parents treated them. Andrian and Sidney both deserve happiness. They have gone through a lot of things. 
 I think that Zoe will come around. Also think that there are going to be huge changes in Alchemists affairs. I also think that the Warriors will come up. Maybe Duncan and Chantal will come up too. Marcus definitely. That's all I can think of right now. Also Sidney and Adrian are going to be happily together, Jill and Eddie etc. Let's see how my predictions will turn out, even if they are logical ones. (hide spoiler)]