No offence took Dunc.
I think this conspicuity thing needs to be put into perspective.
If you regularly fly down Mig alleys, then yes it needs serious kit and consideration.
If you spend your time bimbling around deserted hills up here in the frozen norf, then where's the problem? Except, do the military squirt ADSB mode S?
Compare the number of mid airs to the number of CFIT, engine failures over mountains, inadvertent IMC etc. We need a different form of high tech to avoid those.
Gadget fiddling could well be part of the problem.