Derfred is right to want this Class E service for IMC operations. The traveling public deserve no less.
For those that don't understand how it could possibly work in VMC conditions, perhaps we should all look at the places where it DOES WORK and learn from that.
If VMC conditions exist, lets copy how the USA makes use of Class E.
Within 30nm of an airport an IFR aircraft can request a visual approach.
Once a visual approach clearance is given by the controller, the pilot of the IFR aircraft can navigate and maneuver however they wish whilst descending to the airport. Just the same as a visual approach in Australian Class G.
We can and should do away with the exhaustive and overly restrictive visual approach requirements we currently have in Australia and copy the US and other countries so that IFR aircraft can conduct visual approaches with the same freedom they currently have in class G.
Class E works with tens of thousands of visual approaches conducted every day in the US. Lets make it work here too with a simple change to our visual approach rules.