Even flight time limits are going to be fun. CASA hasn't approved that sort of operation yet. Crews will be knackered at the end of what will be tours well over 20 hours. And toss in the fact that just getting from the gate to the runway at JFK can take hours...and many flights will be 'out of hours' before they even start.
The idea of these flights seem to open up many cans of worms. If we assume the flight and duty limitations remains the same then you can really only do 2 of these flights in a month correct? As well as feeling like a zombie doesn’t the lack of flying throw up proficiency issues also?