Would you say that with class D versus the old GAAP that controllers are MORE likely to seperate you, or less likely?
Errrr no..
If you're outside their miniscule control zone, you're Class G and they really dont give a stuff. If you happen to ask for clearance at about the same time as someone else you'll be told to track to the same point at the same altitude and if you dare to ask something like'should I follow the blar blar?', you'll probably be told, politely if you're lucky, to 'sort yourselves out'. Then when you call at the required position, you'll be given a sequence but still responsible for manitaining your own separation. They have no responsibility to separate you and make no attempt to do so if you are VFR. Even if you're in your Citation and they tell you to do something next to impossible like 'follow the Jabiru' on a massive circuit, its still you're fault if you get too close or infringe an adjacent CTA desperately trying to widen out.
As for
Go IFR and depart that way!
Now that is REALLY taking the PI$$!
Its unbelievable how much CASA and ASA have spent on this Class D rubbish with no positive contribution to separation or reducing the risk of collision at all! They have very successfully impeded the flow of IFR traffic though and maybe covered a few of their bums when push comes to shove though.