PEI 3721:
Rather than the regulators adjusting training and ratings, there would be much more value in mandating a relatively cheap GPS 'card' in EGPWS.
When the Honeywell EGPWS was being certified, the senior Honeywell engineer on that project tried in vein to make a GPS sensor for the unit mandatory for otherwise non-GPS aircraft. The FAA was more strongly lobbied by a major, cheap airline to not require the optional $1,500 GPS add-on for non-GPS aircraft.