So it wasn't a cheap play or dirty play, but you want to have rules based on result that is out of control of the player, not on their controllable action? Then it probably is time to end organized football.
Here's the problem with what you suggest, and what happens. DBs from EVERY team, every game come flying in with their heads totally down and because the whiff or don't make contact with the head, no penalty.
A guy comes in and tackles appropriately with a runner still falling forward but because that runner is being taken down the correct position at the point of attack no becomes contact with the head. You want that to be a penalty?
The reality of the sport is you can sometimes have the best approach in a play, and people still get hurt. You can sometimes do stupid dangerous things like ball carriers leading with their crown or DBs launching and whiffing with their crown, and no one gets hurt.
We have a ton of head and neck injuries in football because dangerous actions are not punished because they are A) offensive players committing them and B) defensive players that get lucky and miss the offensive players head despite launching with their head down.
I think we'd be shocked at the reduction in head and neck injuries if we ruled in a way that led to corrective action.