This is basically the same criticism I had for the previous book. This is more of the same. I am interested in these characters and their story, and I absolutely love the premise, but with our a consistent source of tension I almost want to just skip the next book to see if they've gotten to the good part yet.
There is one major raid in this book, but I never got the feeling that they would lose. It ends up just being pure progress, they do the thing, they get the stuff, hurray they won, etc. It gets boring, and the interpersonal developments aren't enough to carry the story through, because it's not that kind of story.
I'm going to stick it out for the next book, but I might be dropping the series after that.