WAC is currently trying to build the infrastructure that they needed for 2007! The final result is going to be a patch-work of knee jerk short term fixes to a critical problem. Opportunities have been missed to build a few high speed exits - SY is an example where they can be built in a narrow corridor of land.
The slot time process is flawed, as is the PTL - however what alternatives are being proposed? If your colleagues are rorting the system, then that is is an issue for you take up with them - not ATC.
The underlying issue is that you move from a 3nm standard near Perth, through a 5nm standard and upwards as you get further away. You can not compare it to the Radar J curve that exists on the east coast.
Why don't all operators have ADS-B? Why don't pilots push for their companies to install to allow greater flexibility? They don't want to pay the money, but the cumulative cost of the delays and holding hasn't been taken into account.
The problems are systemic and are borne of neglect and buck passing. Sadly that is a by product of the cost recovery model and 'profit at all costs' mgmt mentality that is todays norm.
Pilots bagging ATC's or vice versa is counter productive. Pressure needs to be put on the companies and corporations upwards to government. Unfortunately the federal government is a car crash and can not be counted on for anything resembling help or leadership.
I still do not understand why Perth based operators have not been united in their attack on WAC? Why they have not been untied in their attempts to lobby government (particularly one Senator X who is aviation friendly).
The people operating the system at that level love the anti-ATC or anti-pilot threads like this as it defers attention away from them. As previously stated, play the ball not the man.