Captain Midnight . No proposal as yet. But more and more RAPAC members are starting to accept that the CASA change came about because CASA was attempting to get the airspace with frequency boundaries to work in an acceptable way.
That is change ICAO class E and G airspace into a type of low cost experimental ICAO D where traffic information is available on VFR aircraft.
One day with new younger RAPAC members we will easily be able to remove the unique boundaries and get closer to the simpler internationally compatible ICAO airspace.
That will assist our international flying training industry as at the present time a number of the US and Canadian schools advise potential students not to learn in Australia as the airspace is strangely different. They are smart marketeers.