Yep. Perhaps change the rules some. Maybe go back to leather helmets?
Safety guru turns to football helmets
http://www.plasticsnews.com/article/20130926/NEWS/130929935/safety-guru-turns-to-football-helmets#
Inflatable padding
According to Andrew Tucker, football helmets adequately protected players from catastrophic brain injuries, but helmet manufacturers had no motivation to design helmets that decrease the risk of concussions. Vin Ferrara[citation needed], a former Harvard quarterback, accidentally discovered a new way to cushion football helmets. One night, Ferrara was looking for an aspirin when he saw a squirt bottle in his medicine cabinet. As he pumped it and then punched it, he realized that the bottle withstood the blows of different forces. Ferrara immediately came up with the idea to encase football helmets with a number of inflatable pockets in order to cushion the blows a football player receives.
http://en.wikipedia.org/wiki/Football_helmet