Medusa Uploaded

I loved the premise: a generation ship in a 100 years voyage to a new place, augmented humans, classical music references, lots of visits to airlocks, a rebellion, deep sleep units and awesome semi organic-semi synthetic artificial intelligent units, called Medusas.
There is a class struggle between the Executives (the privileged class who groups into Clans) and the rest...the “worms”.
It's a little bit disturbing because the “worms” working as Slaves are practically re-engineered to serve the Executives and they can control what the Slaves can see, hear and smell. But the protagonist, Oichi, has an advantage: a high tech implant that her parents gave her so she can see and do things no other Slaves can.
There was one aspect that I disliked thorough the story: the passages about the Executive's parties and their political power / political influence conundrums. I wanted to see Oichi having more fun, she sounded so focused on her mission and I felt a little depressed about the life she had.