Chuck,
I have had this debate with Dick privately, and I have posted on here in a similar manner, so here is my bottom of the aviation food chain opinion.
Anything that flies should have a minimum Mode C Transponder and we should all be going for 100% ADSB as was being promoted last year. And the GA fleet being equipped by the savings in Radar installation and repairs being avoided.
All things that fly......OK Pelicans, crows and sparrows are exempt!
If I can have it in my plastic bug smasher, so can everyone else. Gliders RAA GA and RPT. Its not that expensive and when GA is subsidised for ADSB its a no brainer.
OK.......hard hat on.....into my bunker!
J