Loved your book David. Then again, I like everything you write!
However, I felt that the Sorrows of Empire could have been even longer...for example, I would have liked to have seen the Carol Marcus/Memory Project outlined in more detail. In addition, several of the "years" passed by too quickly which made the novel choppy in places.
However, despite these minor quibbles, I thoroughly enjoyed the book! This is how the Mirror Universe should be depicted --- not the convoluted drivel that is currently consuming the DS9 Relaunch.
Here's hoping your proposed follow-up Mirror Universe book gets approved!