It was kind of all-over-but-the-shouting with the last book, and it was tough for me to get into this one, to take a whole book to tie up loose ends.
The authorial style didn't feel up to the standard of (four of) the other five books. Don't know what else to say about that. See my complaints for book four, but to a lesser degree.
The ending-- I know that the ending was especially dictated by RA Salvatore, but it felt more than a little awkward and forced, getting the characters from their arc to their end points.
Okay, so I can't really argue with character development and story arc because that's the author's choice, but I just felt let down by this book compared to (most of) its predecessors.