The author in me respects her for the ending, it was a damn backstabbing thing to do to Fitz after he have been feeding her for so many years, but it felt somehow proper and right in a very twisted way.
The reader in me, however, has been left to hang. The book was too meandering in sub-plots I personally didn't care about, like at all, and the bitter end of Fitz did feel like a few steps too much on Hobb's part. I'd always remember this series with the bitter taste of Hobb going the soap-opera way literally at every possible turn - that's the main thing I dislike in her writing. She never let's the characters to communicate effectively or to have a break, and it weakens her story and certainly puts some people off of her writing - I did quit on Fitz' story after the Assassin Apprentice book, only to dive into the second one half a year later, because the completionist in me just couldn't have a break.