According to Mark Maske of The Washington Post, one of the rules the NFL's competition committee is considering is a ban on leaping to block field goals and extra points.
During a Week 7 game against the Arizona Cardinals, Seattle Seahawks linebacker Bobby Wagner jumped over the line of scrimmage and blocked Chandler Catanzaro's field goal attempt. As it currently stands, the play is legal if the defensive player doesn't land on the opponent and there is only incidental contact. The defensive player must time the snap perfectly and have the athleticism to leap over the line of scrimmage for the maneuver to work.