I'm a librarian who loves anime, manga, and reading a wide variety of genres.
I'm fangirling over the linguistic stuff here. Bren translating, in real time, between the ship and the atevi. The ship folk may or may not be linguistically homogenous, and yet they still have to decide on someone who might be able to learn to speak to the atevi like Bren.
One thing, though: I would have expected more linguistic drift, but so far the Mospheiran humans and ship humans seem to communicate just fine. Then again, they haven't really talked to each other much yet.