The bottom line here is this.
We have to be ICAO compliant....but we are not. So what do we end up with, a jolly mess that is not FAA/EASA/NZ CAA or any things else but a home brew. Hang on we had one of them already, and it was a lot smiler once upon a time.
Progress for ya!
What will happen is that many people outside of Airline ops are just simply going to vanish under the radar all together. Primary paints will vanish off the radar screens in all directions, even on days when you know it has to be an IFR flight.
Nobody will do IR's anymore, just a basic BFR and go feral flying and CASA will be powerless to stop it.
All they will have achieved is a reduction in safety, and to be honest they deserve what they get.
If there was only a small number of legal and compliant folk before, now there will be none. We will all be criminals.
The fact we are a month or so out from such a big change and all the "devil in the detail" stuff is only just emerging, and they have no idea themselves what it all means tells you a lot.
The changes to CTAF's and radio procedures etc over the last 10 years have been better publicised and the education materials better distributed on those matters. My PO box has been rather lacking in anything educational from CASA since the non towered aerodrome changes.
This has all the makings for a giant corkup if ever there was.