Perspective Required
Just to put the whole argument into perspective, Pruners should remember that 2 MBZ locations (with CA/GRS) in Australia are already experiencing 80+ jet RPT movements a week (BA146/B737), as well as corporate and charter jets and turboprops that range from anything between SW3/DH8s to B757/G5s. All without any major incident as far as I'm aware.
All of these jet movements occur in a GA traffic environment at both airports that is far busier than AV will ever be. In some cases, the GA traffic levels would be higher than at some of our existing control tower locations. So its not as if there isn't some successful uncontrolled precedents already operating in Oz.