Just finished it. Loved it.
This is completely subjective, but I was hoping that the Tzenkethi would be a much more alien, non-humanoid species. Something insectoid or otherwise exotic. But I liked what David established about their social structure -- the role played by genetic engineering, the echelons, etc. I'm a little bit confused, though, by the distinction between the titles of "Rej" and "Autarch." Is the full name of the office being held "Autarch of the Tzenkethi Coalition," or is the term "Rej" also part of the office's name?
Gell is back! And she's Praetor! Go figure. This certainly helps fulfill the idea that the Typhon Pact isn't necessarily full of mustache-twirlers out to destroy the Federation. I was disappointed to see the Imperial Romulan State dissolved, though -- I really liked the whole "East Germany/West Germany" vibe the IRS/RSE gave off.