Do you think so??
What makes you blokes think ASA would listen to you anyway? The airlines spend the big money in aviation (inside the j curve anyway) and it appears to me that ASA and CASA are both subsidiaries of Qantas.
In a few years, when they figure out how to do it and get the technology working they will mandate ADSB (if they can) so the airlines can get "nannied" in the few outback places they go to, and ASA can make more money by doing it. The GA pilots and operators will gain very little from it, and will have to carry it and maintain it. Just like the transponders. ASA will also win by having cheaper surveilance gear. The major beneficiaries should pay for it.
There is equipment aqvailable, or coming which will bbe much much more valuable to GA. Some of it may cpmpete with ADSB, and this , of course cannot be permitted. Shock horror.
Ten thousand little aeroplanes are not considered important, but a few hundred airliners are. They will get what they want.