CAO 48 is not perfect, but has served us well for over 50 years. In a few places the wording could be simplified perhaps to make it easier for us old blokes to interpret some of the few "gotchas", but in general why fiddle with it in the name of fatigue management?
Unless the new legislation will guarantee that we work LESS.....yeah right, Santa Claus is real too.
Allowing operators to control flight and duty programs is akin to putting a paedophile in charge of the primary school.