I'm having mixed feelings about this book. The concept is cool. I like all four of the main characters (heh) and the supporting characters are fun.
What I'm not so happy about is the repetitious angsting and the cardboard cut out bad guys. Both of them got old real quick.
I like the addition of new species to this series, despite the heavy handed retconning in the prologue. And I'm looking forward to seeing where it goes from here.