I cant imagine many EK drivers being keen on this (they earn similar numbers to me after tax), Ive done the maths from the UK and its a non-starter.
I can still keep my property in NZ..pay a mortgage in the UK..travel backwards to NZ and Oz 6 times a year..and even belong to a pretty good golf club.
The JetStar salary on the other hand would mean selling the property in NZ to get a decent place in OZ...and 4 sector days!..or bloody longhaul!