Don't have much to say that hasn't already been said. I really enjoyed the focus on Garak and Cardassia in this book.
As for the overall series, I'm wondering if the remaining three books are going to focus on other aspects of the fallout of the assassination. Maybe the overall story is larger than just that one event and its resolution, but also brings in other crises which relate to the assassination but have their own stories to tell.
Whatever happens, I'm definitely looking forward to the rest of the series!