I found this book very interesting, though Snow's entire character was incredibly irritating (yes, I know that's the Point). Of course, it helps that we know we don't need to cheer for him or hope for character development. He's not the hero of this story, even if he is the protagonist. 
I haven't read a book where the protagonist's character development actually gets worse, but here we are. That being part of the point, though, I can say with confidence that it was MASTERFULLY  done. 
Suzanne Collins does it again with her social commentary. I was particularly affected by the first funeral in the capital, when the tribute who killed her mentor is blamed, the districts are once again blamed for all violence, and the capitol remains blameless. It speaks to the violence oppressors commit toward the oppressed, and when the oppressed have had enough, and finally fight back, they are always the ones to take the fall.