As a 3000+ hour fighter pilot, I think this is an interesting thread. As a guy who also flies GA and now for an airline, let me ask the group this: what is the largest cause of GA crashes? Of all crashes? Is it mid-airs, or low altitude stall/spins? I would say the latter, yet the FAA is requiring ADS-B. If they were truly concerned with saving the maximum number of lives, AOA gauges and AOA instruction in training aircraft would benefit all pilots greatly.

The simple way I think of it is the wing flies by AOA... It doesn't care about airspeed! When teaching aerobatics in the T-6 to a friend who has 13,000 hours (mostly on floats and no jet time), we had lots of discussions about AOA, unloading the wing, how you cannot stall below stall speed if you unload, etc.