Scurvy great idea But!
Considering the speed at which Sydney is growing, how long is it going to be before the folks who buy cheap on a runway approach path start bitch'in (again) about the noise (again) and, having runways closed down (again). By using Willy, we get a lot of sky back, the whole area is in the middle of some of our busiest air routes. The only real issue is the fog at Willy. Seems a shame not to use it, just to keep a dozen or so aircraft in operation so the boys can stay current and do their 100 hrs a year or whatever in the circuit or training area. Plenty of room at Broken Hill or Andamooka for them.