I left PNG over 30 years ago. But even way back then I remember being asked by 'Elderly Villagers' (and occasionally some not-so-elderly) the same question, and so many times I lost count.
"Mr Pilot, when taim bilong Masta come back?"
I'll stick my neck out and say that the above mentioned scenario would be the only thing that could possibly bring stability to that wretched place.
However, it just aint gunna happen!