Have you asked the CASA OAR why they require the change?

If not, why don't you and post the answer here.

And as I said, the IFR Pickup was changed by the people at CASA so it would not work- that's why it is rarely used.

Dick,
Why can't you answer some of our questions? I'm not trying to antagonise you, they are just questions on how things that you're suggesting, will work.

In post #53 you said;
Radar has everything to do with it when your talking about "E" almost to the ground in a terminal environment. Re Your Alice example, there are controllers in Alice TWR that continue the procuderal separation service after aircraft transfer from centre, until visual separation can be applied. If aircraft will not become visual, early enough to conduct a VSA, then they're stacked vertically separated in holding patterns until they can conduct an Instrument Approach. You can only clear another aircraft for final approach (IMC Procedural App) when the first aircraft is in sight and assured of a landing (by TWR). This can only be done be an ATCO at the airfield.

You also keep talking about "E" airspace and VMC, no need for radar etc, but IFR must be separated from IFR in "E" airspace regardless of the weather. I don't think you really appreciate how difficult and workload intensive procedural separation actually is.

I also asked you what will be acheived by having "E" down to 1200' agl but you avoid answering the question.