My guess is that CASA will be "enhanced" - that is to say broken up into a regulator and an enforcer, and the New Zealand/FAA regulations will be adopted. That would be the fastest and cheapest solution in my opinion.
Sunfish,
You haven't had what are supposed to be a set of confidential documents to that effect leaked to you, by any chance??
Tootle pip!!
PS: Regardless of the "regulations", an incredibly hard thing to shift is an entrenched "culture".