The Class E deniers don't seem to understand.
We should copy the United States here and issue an airways clearance to IFR, ON THE GROUND prior to departure. Class E should go to the ground when the tower closes. Problem solved.
This problem is a combination of uniquely Australian stuff ups.
Glass G at an airport and class E starting at 4500ft AGL where the collision risk drops dramatically. Unique Australian design stuff up.
Would be IFR aircraft that are not considered IFR (no clearance) but are not considered VFR either (restricted from entering Class E). Unique Australian design stuff up.
We are a laughing stock.