Portable and cheap ADSB traffic systems for VFR were approved in July 2020, so the game has changed. A Sky Echo ADSB in/out VFR box is the size of a fag packet, mounts on the window of any lighty and costs $900 - every user and other IFR can see each other out to 40miles. These incidents would virtually stop overnight if CASA were to mandate ADSB in CTAFs where RPT operate.