Given that corruption appears to be condoned now in the Australian Public service, well in CASA's case anyway, what hope is there of getting any form of sensible amendement, I would suggest Zilch!
The control of CASA is now in the hands of Lawyers and egomaniac misfits who hold themselves up as "Experts" on everything aviation, backed up with a charter devoid of any reference to, or requirement to, balance the "Safety benefit" against the cost, example CASR 91, there is little hope that anything the industry might put forward would ever be taken seriously.
Any licence or Certificate issued by CASA now is just an invitation to break the law. I can see the lawyers rubbing their hands with glee, daydreaming about that new Mercedes, Yacht,holiday home, while the bean pushers count the flood of money into CASA's coffers.
Bit like speed camera's really, revenue or safety?