I quite like it to be honest, specially the new Guy character... I think he should have both passives: "loosing health one" and dying awarness so that he becomes stronger before dying. However the loss of health needs to increment with the rounds or he'd be easy to keep alive.

Maybe they could make it where healing is more ineffective on him after he uses his mystery skill?
Actually, in order to ineffective healing, after he uses his mystery he should recieve ignition every round... that way he'll lose life and stop healing at the same time. :)