Although at first I thought of giving it four stars, for me any RPG product that keeps me interested to read it completely in the same day deserves 5 stars.
It gives you a few interesting ideas to play with if you have one of the best books ever produced for werewolf, Shatered Dreams, and expands the theme there that the War of Rage was fought making horrible mistakes by both sides.
Mechanically I don't think they are well balanced, I think that they should not be more powerful than a Garou. I understand the reasoning behind the four point in stamina-crinos form, but the book of Changing Breeds make the Khan less phisically powerful than Garou, and Tigers are really big!. I also didn't liked their rage, combining the rage of both Gurhal and Garou makes them really powerful (maybe they should have only Ghural-rage until rank three were they "unlock" full auspices?).
But the background for them was beautiful and well-made, and it gave me a few story-ideas for my loooong shattered dreams chronicles.
I also think that you should add the knives of the council to the book, making them weapon-fetishes that you could inherit with the intrinsic responsabilities.
Please forgive spelling mistakes in the review as english is not my native tongue.
Keep up the good work!