CASA and AsA have agreed that it will be E over the D. The boundary will be at 2500'
That upgrades the link airspace from G, so how could anyone claim that safety would not be improved?
Yes , I know , a small number of ATC's including ARFOR want to provide class C as they want to take on more responsibility and liability without any extra income for AsA. They are actually charitable workers and don't really want their salaries linked in any way with the actual income they produce for their employer!
The cargo cult is alive and well.
See post no. 25!