As is so often the case, the new rule will not be the problem. The problem will be having competent on-ice officials making the call correctly.
Yes, and not only that, any time the offensive player is trailing a race and playing at home, there's going to be a rain of boos from home crowds (well, if they even learn the rule) when the play blows dead. What if it's like Mason Raymond trailing the play and Doug Murray is the defender with position? How far away does Raymond have to be before you can be SURE that he wouldn't catch up and pass Murray?
I don't think there will be many ACTUAL problems or controversies caused by this type of rule. Probably not even as bad as the stupid 2-minute minor for shooting the puck out of play with no pressure whatsoever on you. But why does the league allow discretion on some things (hybrid icing, intent to blow, etc.), but not on a play where the puck hops up on edge and you're required to call a delay of game because of black letter law?
International/college icing is far safer than even hybrid icing and does nothing to harm the game. It's also leaves virtually no room for interpretive error.