A couple of years ago, the Cowgirls and JJ lost a game to the Packers where a Dez Bryant catch was ruled incomplete (basically based on the Calvin Johnson rule). By the next season, there were rule chances. So yes, I can imagine the forces at work because we've seen it already.
As for the overtime discussion. I'm with the crowd that thinks the current system gives too much of an advantage to the team winning the coin toss. I really like the college rule but understand it's detractors, who have valid points but not enough to sway me. For the NFL, just playing another quarter or simply stating that each team will get at least 1 possession would be an improvement.
A note on the coin toss advantage. Ever notice that it's not unusual for teams to score more late in games? Defenses get tired and by the end of a game it's pretty common for the offenses to have an advantage over the defenses. For me, that's what gives the winner of the coin toss a huge advantage.