Any character introduced in this book is forgettable. Andi, Madeline, Jake, Alpha and Tattoo - they show up, get a (nick)name, seem like they might end up being important - and then they get completely dropped. None of these characters (except the last two) actually do anything that affects the story line. Sure, these people could very well pop up again the next book, but characters shouldn't be introduced an entire book ahead of time just so you can go "Oh yeah, that guy" when they finally become relevant. 
 The banter between Penryn and Raffe is still great. I also really liked the dream/sword sequences. The stuff we learned about the angels was interesting too, although I had guessed most of it beforehand.