I somewhat understand the safety angle of it, but, to me, eliminating kickoffs is eliminating one of the most exciting plays in sports. The crowd goes nuts before the opening kickoff, especially for college games, and sets a high energy level for the home team. This has already been reduced by the NFL moving the yard line for kickoff up, resulting in many anticlimactic touchbacks. You could say that players shouldn't need the crowd to get them up for the start of the game but it's human nature that they feed off the energy of the crowd.