This is something that I have thought about for a long time. No technology advancement will ever solve the issues. It only makes people play harder and faster. The only way to truly make the sport safe is to take away the helmet and types of pads so people wont lunge directly into another player at full speed. I am also personally biased as I have expereinced head trauma from football hits and wished I would have been more aware of the reprocussions.
Additionally, the taking extra time out for concussions is pointless. It is not accomplishing anything. The real damage from those hits is not what occurs hours or days later, but years down the road when the players start to get all sorts of neurological disorders and the early onset of alzheimers, etc.