Surely the solution to this problem is simple!
1) Close Williamstown as a military airbase. Having XXX adjacent to / in the middle of such a high density population area and impeding a major N/S air corridor has not place in todays world.
2) Sell Williamstown off to the highest bidder - cause that's what we to with valuable aerodrome assets.
3) Move the Squadron(s) currently based at Williamstown to Sherger. This will help to populate and develop Cape York - which is something that badly needs to be done in Australia's strategic interest.
The only downside that I can think of to the above proposal would be the long transit times if an FA18 is needed to intercept a wayward Cessna that looks like it might be threatening some major event in the harbour city. However, given the speed difference between a C150 and an FA18, a supersonic dash across the penninsula and down the eastern seaboard should have the FA18 on the scene in no time and would be a good training exercise anyway.
Dr 