Dick,
Maybe so but this thread you initiated cited Heathrow procedures which, if introduced at Williamtown, would make transit more difficult with an inner area to deal with.
I have been held when transitting Williamtown waiting for an RPT jet to depart so if the airspace can be made more accessible well and good but Heathrow is not a good example to use.
P.s. Yesterday I happened to come across the old documentary of you and James Randi taking on the dividers. That was good work.