I agree with NoDak's take. I understand wanting to make the game safer and better but the XP is way down the list of things that need to be fixed to improve the game.
If the NFL wants to improve the game experience for fans while putting extra money into their own pockets I'd suggest that they focus on increasing security at games and adding stuff like free public wi-fi at stadiums so fans can track their fantasy teams and gamblers can keep up with the bets they've made.
The security part is the real big one. It's getting to the point where most people would rather not go to a game because of all the drunken idiots fighting, throwing beer, dropping f-bombs in front of young kids, etc. No one wants to drop a few hundred bucks for tickets and have to put up with that nonsense. Plus most fans are already in agreement that the NFL product is more enjoyable from the comfort of your own home because you don't have to worry about the drunken idiots, you can follow your fantasy teams, your football bets and so on.
So, IMO, the NFL really needs to concentrate on cleaning up fan behavior at games and improving the fan experience at the game because if they don't I guarantee 10 years from now attendance will be down drastically.
Bottom line: Leave the XP alone and work on improving important stuff like the in stadium experience. If they make it safer and more enjoyable the fans will come which means more $$ in the owners pockets. That's the stuff that matters.