I've always been curious on onsides kicks. Is it not possible to put the thing straight up in the air high enough that it becomes a 50/50 proposition? It seems like that would be advantageous compared to the regular system that gives the receiving team a better position to recover.
In the final seven games of the 2013 season, the Chiefs averaged 34.6 points per game, scored 38 points or more 4 times, and went 2-5. The NFL has ruined the sport.