Too many planes, not enough runways.
Surely the Sydney airport layout has many more options available for runway usage. It has 3 runways. What about LAHSO on 16R,34L from about "K" that would give you about the same length as the parallel runway and start using 25/07 more. Most aircraft can take a 20 kt cross wind without tooooo much effort and also the runway lengths wouldn't be too restrictive for you avarage turbo prop or east coast run. Imagine the combinations you could come up with if noise sharing was not an issue, though it would probably completely screw the sids and stars.
While we are at, does the helicopter base have to be at the airport? I've seen the flow disrupted a few times due MED1 choppers. (Sorry chopper pilots, but this is all about me.)
Clark y.