Dick,
Your Quite:
"How much per passenger? Not much compared to staying alive."
How was your cost case for how many lives could be expendable when you closed Proserpine and other towers??? Why are you telling us now that ASA should do what you DIDN"T do and spend millions in getting more people and coverage (either radar or otherwise) in Class G and mixed airspace to provide another layer of safety.
I ask you again, didn't you call this "affordable safety"???