Every year, the Competition Committee tinkers with this and that to come up with some new variation on the rule book. One of the big rule changes that we saw pass during the course of this offseason was the set the line of scrimmage for a touchback on kickoffs to the 25-yard line, rather than the 20.
The philosophy behind the change was to reduce the number of kicks that get returned, as well as the number of returned kicks that result in high-impact collisions with long running head starts, but many believe that the rule change will have more of the opposite effect.