Designing hair to grow would be a time-consuming and tedious task and I\'m sure the team has more important things to do. Tattoos, scars, and hair-dying would be easy and add visual appeal and diversity to the game. Also, seperate hp for seperate body zones sounds like a very good idea, and hits that do greater than x damage give a small scar, greater than y damage give a medium scar and greater than z damage give a major scar.