I did a cursory look up of the amount of times games go to overtime/extra innings in the big 4 NA sports.And 3 on 3 in the NHL is actually quite fun to watch. Not suggesting the NFL to go 7 on 7, but the point is you can find ways to make OT more exciting for fans while declaring a winner to the game without having the OT drag on.
But depending on the OT rules, OT games in playoffs may need to be more closely resembled to regular time. Again, the NHL plays 5 on 5 in OT for playoff games until someone scores. It works for them. I think the NFL can come up with ways to make OT more enticing for fans in the regular season while using a more traditional method for playoff OTs
NFL - 7%
NBA - 6%
MLB - 9%
NHL - 21%
NHL has to absolutely ensure that they make their OT the most compelling as it's the only one of the 4 sports where it is impossible to score more than a single point on a scoring play. It's also the reason they go to overtime more than the other sports.
But back to the NFL, that 7% amounts to about 20 games a year of which only about one ends up in the tie. All this teeth-gnashing over one game seems silly. I agree they should move it back to 15 min OT since both teams are guaranteed a possession now, however.
Honestly, it's that most kickers have gotten too good at what they do. Maybe it's time to narrow the goalposts to greater incentivize touchdowns.