Overtime rules
This one is an obvious one. We saw it first-hand in the Bills-Chiefs playoffs game. It is simply unfair that only one offense touches the ball if a touchdown takes place. I think they should do the right thing and go to the college overtime rules. For those who don't know it, in each of the first two overtime periods, teams are granted one possession beginning at the opponent's 25-yard line. Both offense try to score and the other team has to match or beat the previous score. If the score is still tied after two such periods, each team alternates two-point conversion attempts from the 3-yard line until one team scores and stops the other from doing so. I know the ending is not the best but this is to ensure we don't see a game going on for 7 hours like that LSU vs Texas A&M (Link Below).
This rule change is even more important nowadays because of the importance of the offenses. NFL GMs are now building their team around a quarterback. While defense is still a crucial part of a team's success, offense is king. We saw it in the playoffs, if you did not have an explosive attack, you could not win those big games. This means that it would be unfair for a team that has put so much stock in their offense not to get a chance at even touching the ball in overtime.