I believe the crux of this issue is the inability of many pilots in Australia to come to terms with Class E airspace. Nobody likes change, but there is one thing that is consistent in this business, and that is change! If we are to develop and use the international classes of airspace then we need to understand what each class provides and then work within those boundaries. Class E is fine with or without radar, but you need to be aware that in VMC you need to keep a lookout as it is only the IFRs that ATC are working. If there is radar coverage you may get some traffic info, but as you get lower of course the coverage usually limits that. Of course the other issue is that in class G and in the CTAFs far too many pilots don't think before they hit the PTT and as a result there is far too much talk. Some standardisation would be good with some education, but I don't see that happening as many of the CASA officers don't understand the basics either!!