Wombat. Excellent post...will never happen as it is too practical
I have operated from oz to the US and unforecast weather has taken the airport to cat IIIB conditions. In Melbourne one of our few 3B airports the world would have ended, aeroplanes would be holding everywhere, the flow rate would have dropped to a trickle.
in LA, no mention of it other than on the ATIS and we got less dicking around than we usually do.
i cant help thinking that the Australian policy of separation assurance slows things down so much that it becomes an impediment, yes it introduces risk, but appropriately managed that isn’t a problem.
on the upside, the Australian ATIS is MUCH better than the US ones. The American ones read like war and peace and will have the weather at cat 3 minima and still say they are doing visual approaches to runway 6r...go figure.