NCAA does have the best OT rules IMO. Each team gets the same number of possessions barring a defensive score. Starting with third OT teams must go for 2 after all touchdowns. Winner decided when one team fails to match the other team in any round. NCAA starts each possession at the 25, perhaps NFL could do it at the 35. 52 yard field goal try if the offense fails to gain any yardage.
Disagree. NCAA stinks. Kickoff and punting special teams are a huge determining factor in regulation, then suddenly they are not allow to factor at all in OT. Plus, no offense is needed to get into field goal range, and a difference in nothing but the leg of the kicker (including whether 1 kicker got hurt during the game) and completely determine the outcome. 1 or 2 plays are what determine most NCAA OT games. In NFL, a sustained drive is usually required and its determined more by the same multiple factors that determine the score in regulation. Rarely is it a single big play that leads to a TD on the first possession.
Current NFL is better than NCAA, but would be even better with either of the changes I mentioned to Jimmy.
If you want special teams more involved, then perhaps a hybrid NFL and NCAA rules. Both teams get the same number of possessions, but instead of starting at the 25 or 35 yard line of the defense, kickoff after each score like they normally would, which barring a kickoff return for a touchdown, the teams would have to sustain drives. Would work something like this:
If either team scores on defense at any time the game is over and the team that scored on defense wins.
Whichever team wins the toss gets the same options they got at the beginning of the game except to defer.
Say Team A wins the toss and elects to receive, Team B kicks off to Team A. If Team A's possession fails to score then Team B can win with any score on it's next possession. If neither team scores, or both teams score the same amount of points on their possessions the game continues, with each team getting one more possession. If one team scored more than the other the game is over. Each team in such a situation would have had 1 possession.
Starting with the third possession for each team you have to go for 2 after a touchdown. Team A scores a TD but fails to get the 2 point conversion, team B still has to go for two.
With that hybrid, then special teams and field position matter, but each team gets the same number of possession, unless there's a defensive score.
Edit: you'd have to disallow the onside kick in overtime, not sure how best to write the rule for it, but a fumble or a muff, recovered by the kicking team, should count as a turnover.