When many EAS routes stop getting serviced there's going to be a lot of unhappy politicians. For those familiar with flight training, wouldn't cutting the 1500 hours to a lower number decimate the CFI ranks? Just robbing Peter to pay Paul? Age 65 wouldn't do much as already posted above, but the 1000 hour rule would be the most effective I'd guess. I'd also guess the FAA will push back hard on that thou.