Crewbus personally I detest min rest overnights - defeats the purpose of flying. I don't buy into the "cost effectiveness" arguement in places like bne/syd/mel/adl/ool - even hba/per - as there is plenty of flights in and out of those places a day to create the pairings around. Crew can still do 8 - 9 hour duties each day with reasonable rest each night - reasonable is 15 + hours. I have nothing against working the hours our agreement states we can - but when you have 9 hour days 4 days in a row with rest each night being 13 hours or less, it just does not work for anyone, and its increasingly difficult to motivate crew to work hard when they turn up for duties like that week in week out.
I believe that there is a happy medium to be had - one that keeps the beancounters happy, whilst keeping crew happy at the same time. Right now the $$$ vs Employee Happiness pendulum is swinging firmly towards the $$ side of things.