Excellent points, Dick!
Let the military keep their radar though. When considering the duplicated civil/military ATC we would gain more benefit by removing most of the Restricted Areas. I have never really understood why a few military aircraft feel so threatened by the sparse civil traffic here in Australia. Know all about dynamic manoeuvring and traffic density, and neither of those are really a factor in a country this big to the extent they justify the allocation of special airspace to the military, except for the occasional bombing range, live firing area or similar. To tie up as much air space as do the Sale, Richmond, Willy, Amberly and Townsville restricted areas seems way over the top given how few aircraft ever use them. I am not even mentioning Pearce! The highest density military operation in Australia warrants FIS, RIS and RAS...not restriction. For those services we could use the military radars/controllers.
The flight safety counter claim and fear of collision is anxiety rather than reality based. The presumption that regulation reduces risk can be countered by the fact that complacency kills. All pilots should look out more. We should adopt best practice and use the scarily empty OCTA as do most European and North American countries. The truth is that in a massive country like Australia there is really not much traffic out there to avoid.