But surely you only give a t*ss what the NZD is compared to the USD if you are thinking of moving on overseas again. Jetstar NZ is not a contract to make money from, is is currently and will remain the best DEC jet job available in New Zealand. Living in New Zealand and not China, Middle East is personally worth more to me than all these contracts / middle eastern carriers can offer.
But hey, each to their own, all I can say is that screwing a better deal out of Jetstar is good for everyone in the end.