A question or two for the ATC'ers.
I absolutely adore the ability to overfly primary airports in Class E in the US. The procedure works beautifully and is enormously convenient. Granted, there maybe several restrictive issues to the same procedures here. One that comes to mind being the routes airlines are required to fly for noise abatement in Australia. But I can't think of anything else offhand.
However, if I can overfly similar airports in size and movements to Sydney in the US while remaining 'safely' VFR in Class E, what specifically is there about the proposed NAS procedures in Australia that makes the procedure so 'unsafe' and unacceptable here? ATC appears to have the same equipment and if anything, the GA and VFR traffic appears to be considerably less.