Sunstar, did it occur to you that not all the schedules are loaded? Presumably the schedules for the other 2x daily services aren't yet in the system. That's the only explanation I have, anyway.
9 daily MEL-SYD was never going to work, as their business model simply doesn't require the frequency aspect (after all, how many Ryanair/Easyjet routes are served 9x daily?). 4-5 daily might be about right IMO, and it seems that's the way they're heading anyway.