Now I know this is an insane idea and will never work, but no one has ever tried it, and it may be the future of the NFL.
What if we had 2 Quarterbacks in on the same play. Not like a trick play once a game, but a serious formation. Like in a shotgun, instead of having 1 QB and 1 RB, we would have 2 QBs. It would distract the other team, and drive them insane, cause we could snap it to either QB. Both could bootleg out of the pocket so that the other team couldn't just stack a blitz on 1 side, and if 1 QB is about to get sacked he could lateral it to the other QB, and the other QB could throw the ball. It would work like a flea flicker. It would be great if you have a veteran QB, and a rookie QB who has a lot of potential, and will be your franchise player in a couple of years. The rookie can get first hand experience and teaching from the veteran, and he would learn his mistakes during a play, not a few days later after the game is long gone.