Very well written, and I'm quite the fan of the different levels and depth of brainwashing on the different characters. I'd love to see/help see more of that in the future.
Personally speaking, however, I do wish there were 2 or 3 more endings:
- Four successfully freeing himself without notice
- Four freeing several thralls so they can end their service with finality.
- Four diving into deviancy (likely after some pit time with Webber) and somehow swaying or seducing his "master" into elevating him as an equal or more.