Way back when I started at Ansett at Tullamarine, Casas predecessor lived literally across the road. I visited once or twice. I expect the real surviellance and "enforcement" in those days took place at the airport club - as it should do.
Centralising CASA in 35 Collins street is a winning strategy, you get to charge for travel time which increases revenue. You have all those nice restaurants and cafes, Pellegrinis, Becco, Florentino, the Italian Waiters club, good book and jewellery shops. Worked there myself.