It shouldn't be too long before the rogues are revealed. If there are no rogues, then the Metron arrival rate needs to be lowered!
It would also help greatly if the Metron Perth arrival slots were coordinated with the departure slots; no point in being assigned an outport COBT for the return to Perth that you're never going to achieve because you copped a 20 minute departure delay from Perth on the outbound leg...
Fooey, you're going a bit hard on the ATCOs. Failed physics, did you?