Very fair points and no I haven’t done it, only ****e 2 crew red eyes.
JFK is that not an unfair comparison as it’s was not a simple out and back, including LAX etc.
SYD/MEL - JFK - SYD/MEL being only two sectors would this not be less taxing? It is an honest and serious question. I certainly agree that the via LAX slips sound tough (have mates on the 78).