It's procedural separation!
I would be asking - how many VFR at night do you get at Hobart?
I'm betting not too many, given the weather and terrain. That gets rid of 99.9% of the hazard,
leaving the IFR traffic, which can be sorted easily by time, distance, lateral and vertical separation..........as it has been for decades.
This doesn't mean it's antiquated, but PROVEN and simple.