mjbow2,
..Surely you can see that this means than a ground controller is not required at Ballina but is required in Sydney. And that different Classes of airspace are required. As the actual risk increases the level of risk mitigating also increases so the resultant risk is at the same acceptably small level regardless of where the IFR aircraft is.
Doh! ...
No one is demanding blanket Class E
Really? Do you not want Class E wherever there is radar coverage?
From "The Australian Airspace Policy Statement 2010":
Class F: IFR and VFR flights are permitted, all participating IFR flights receive an air traffic advisory service and all flights receive a flight information service if requested. This class is not used at present in Australian-administered airspace.
If it looks like F and it smells like F ... it probably is F.
Class G in Australia is the figment of someone's imagination.