I've been screaming for this book for some five years now. A major nation of the world with dreams of conquest, Turan is totally unavoidable in Conan and it's really a shame nothing has been done about it so far (if you except the Aghrapur or Hyrknians articles in S&P).
I found Cimmeria and Kithai not so bad as you say, even if I must admit there was far more useful regional sourcebooks to print before these two (Turan/Hyrkania, Zamora, Zamboula...). I like Loz work, even if his knowledge of the Hyborian World probably don't match with Vincent's.
I can understand a Cimmeria book for the popularity of the name, but why Kithai is far over my head. My theory is that the book was already more or less written as a generic Chinese D20 supplement and that it has been adapted for Conan. This is of course pure speculation on my behalf. Just wondering why... :roll: