Ancillary Justice is a pretty brilliant book.
There are some super interesting things it does like, for instance, the lead character confuses the genders in the society she lives in and ends up referring to everyone as "she". Some of the characters are clearly male and clearly female. Not many of them. In fact I'd have to read the book again but I'm not 100% sure the narrator is female.
It's fascinating how much of one's brain is taken up with wanting to know characters' gender. The narrator refuses to give it to you. And it just happens so organically. Pronouns. Messed up. Brilliant.
Lessee. Complaints. I feel like the story slowed down toward the end. The artwork -- the book is actually aesthetically more in the Warhammer 40,000 universe and grimdark than in the sort of older-fashioned sci-fi world the cover depicts. Uh. That's about it.