I've actually liked DRG3's books, just felt like this one was a 'miss'. Best case, he sacrificed too much of HIS book to try and make later books in the series work better, and took one for the team.
Still poor writing/plotting to not have SOMETHING for this book to do, a reason to exist. You need to do something to move things along even at a smaller level, while contributing to the overall arc. otherwise, the editors would have been better suited just tacking an extra chapter to the front of book 2 with the condensed version, because there's no reason for book 1 to stand alone, or even exist. If there's only enough plot for 4 books, don't make it a 5 book series...
Still poor writing/plotting to not have SOMETHING for this book to do, a reason to exist. You need to do something to move things along even at a smaller level, while contributing to the overall arc. otherwise, the editors would have been better suited just tacking an extra chapter to the front of book 2 with the condensed version, because there's no reason for book 1 to stand alone, or even exist. If there's only enough plot for 4 books, don't make it a 5 book series...