Thanks for the feedback everyone. I've added the maneuvers known and readied (no idea how I forgot that), added the suggested discipline, and increased it to the core, plus 2 of the three optional disciplines.

How about, you recover one maneuver when you bloody and two when you kill, and in both cases the creature must be 1/2 your HD or higher?

Aspects were changed to 1/2 levels, thanks for catching that. Does anyone have ideas for aspects?