I'd like to see rewards for punching and PKs. Given that punching opens you up for retaliation and deaths, give every punch dealt/received a shot at a drop (like a knuckle bone fragment for receiving a punch, or a bloody knuckle for dealing one). Use these fragments to build up a Boxer's knuckle or a Bone mouthguard or some kind of weapon/armor, which can then be built up over time by combining multiple items into better ones. Give these items the ability to be equipped as inventory, and they could provide a boost when punching (like a 2x critical punch, or a 10% punch boost when worn) or could alternatively provide punch protection if equipped. Might be a cool way to encourage more fighting/battles. After 1/5/10,000 received or dealt punches give an achievement and a brass stud that can be combined into the Item for added awesomeness.