It will be interesting to follow the football changes in the coming years. While I'm not stoked about the prospects of kick offs being eliminated, I would respect the decision if it came to that. I would hope that NFL leaders would keep coming together to keep trying to figure it out without eliminating kick offs.
As far as baseball goes, I'm not a fan of that idea either in extra innings. As a fan, I actually really enjoy going to games and never really notice the length of the games. I really think it falls more on it being quite boring to watch on TV with all the constant commercials because of pitching changes, etc. I hope they will explore other avenues before sticking with the runner on second model.