I was thinking that perhaps we need a rule for helmets. Right now they just give a fifty percent chance of providing armor protection against head shots. However, only really good shots do head shots. It hardly seems worth the the weight.
However, during this period time, a steel helmet was the only armor that soldiers wore. The did it because it prevented lots of deaths from artillery shell bursts.
Maybe we should say that a helmet gives protection against Area of Effect attacks. That might make them worth considering.