These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Moral Event Horizon - Many of them are perpetrated 'upon' Ampris, in case you were wondering. Israi, who never was very moral to begin with, crosses this completely after Ampris holds her temporarily prisoner in the Palace Archives in Book 3. She immediately retaliates by destroying the Archives, including all knowledge of how to save the empire. Just for good measure, when things start to really go pear-shaped, the first thing Israi does is set up Holocaust-style death camps and start a mass slaughter of the abiru.
Purity Sue - Ampris seriously counts as one, especially by Book 3, where she's the only character capable of optimism, charity, selflessness, and seeing freedom as desirable option on a consistent basis; everyone else whines, argues, laments their predicament, wrings their hands, behaves in generally unhelpful if not downright destructive behavior, and accuses Ampris' offered options of being worse than the Viis' insane tyranny. Elrabin manages to escape being branded as one because of his Deadpan Snarker tendencies.