Having to hire at all ranks and all fleets at the same time rather than just F/Os on the entry level types would suggest something is seriuosly wrong.
A contract job without the usual pay and benefits isn't going to attract quality applicants. The minimums given are enough to apply for a decent job anywhere else.
A mass exodus of the all important experience needed to deal with the demands of PNG flying doesn't bode well for safety on the domestic fleet.
If you are willing to live in a s**t hole like Moresby you could easily handle a Chinese contract on three times the money.