The beauty of the position CASA is in is that they will never be held responsible for the outcome of an industry ill equipped to manage fatigue. Their defence will always be that the FRMS is merely a minimum, not a target. The focus then shifts to the airline who's defence is going to be that the pilot could have submitted a fatigue report and not operated. The focus then shifts to the PIC who has fvck all legs to stand on.
CASA and the airline management in this country only get away with this FRMS debacle because (a) we haven't had a fatigue attributable prang yet, and (b) they will never be held to account anyway. Sounds like the perfect crime to me.