the be a coordinator, you have a set unit and set strategy and personnel to plan for. as a head coach you have to be an overseer, a diplomat, a referee, a go between, a philosopher, the bad guy, the face of the franchise, the scapegoat, a clock manager. and you will be micromanaged for every decision you make. you will be thrown under the bus by players, and the media will be looking to feast off your carcass. and let us not forget the wrath of the fans...