I think this is the best idea for an additional class / tank in the game. Would love to see it. Even more than the stuff most people are salivating for (NIN, SAM, RDM, DRK, etc. etc.)

But rather than being a support in that it heals the group slightly (That might be OK) I would like to see debuffs based on whatever "stance" the pugilist attack puts them in, if that makes sense.