RV8builder
The future of airtraffic control is a more rigid and inflexible system. ASA long term plan is to put everyone on a SID/STAR with no track shorting, flow done by the MAESTRO system everyone 250 below A100. Eventually they hope to get rid of departures entirely and a very much reduced approach service.
I suggest you also take a look at
Ferris's interesting post on why it takes longer to get a cleareance is Aus