I like the general idea.
Though I'm uncertain about reducing honor and prestige.
That seems like a...powerful downside to the whole class.
I Feel without a sort of negative to it physically, it would make it reasonably similar to the current existing military sub-classes.
Possibly a way to balance it would be to maybe make the level you can drop to as a threshold for prestige and honour be related to how long you have been the sub-class. The longer you are the higher those stats can be and not suffer downgrades if your at that threshold when a tick occurs.
