Max,
From an ATC perspective I'm hoping for some common sense. The PMQ-SY jet flight departs with a 37 minute flight time to enter the hold with 55 minute delay after 18 minutes of actual flying time.
That
is crazy. Wouldn't happen over here. You get a slot time before takeoff coming inbound and it's honoured.
Re Metron, agreed it will fix the inbound holding. Can't wait to be growled-at by Broooome tower "You're not compliant, Bloggs!". Chadzat though is complaining about the taxi slot system trying to get away from Perth.