If they are thinking of scrapping things...scrap the two minute warning. There is no real game reason to have it now that official game time is no longer kept on the field.
College, high school and pee wee football do just fine without it.
Again, do like soccer, where only the official knows how much time is left. Even though soccer gave in, and started revealing how many minutes of injury time (or as they call it in England, "Fergie Time"), they have.