Ref the Military areas etc.
A few years back a group of people got together under the name of the PRD working group. They deliberated for some time and completed a report that addressed the many issues of Special Use Airspace. There were 20+ recommendations and I don't think to date many if any of them have been introduced. It is my understanding that many of the recommendations did not sit comfortably with Defence.
Such things as criteria, numbering, Warning areas, MOA's and off shore Restricted areas were addressed. Many of the recommendations when implemented would have certainly improved the use and understanding of such areas.
In relation to off shore Restricted areas. Outside of 12nm Australia has no authority to control foreign state aircraft and the restriction may only be applied to Australian aircraft.
I think it all got bogged down in the legal department/s of defence/airservices/casa and of course nothing has changed.