Getting rid of kickoffs is just silly. It's a huge part of the game and has been with the game forever. Making a minor tweak like moving the kickoff is a good way to decrease the amount of hitting while preserving this part of the game.
As for the players that get brain injuries, it sucks but that's a part of playing football. I imagine that many players are aware of the risks at this point, and to be honest I think if you sat down with every football player on Michigan's roster and told them the risks of brain injury, I doubt you would convince any of them to give up the sport. The possibility of getting hurt exists in a contact sport. It's tragic when it happens, but it's not going to stop these guys from wanting to do it.