@rgmerk Missed this the other day, but still worth noting as it can't be emphasised enough: any study of a regional travel link that doesn't consider the broader network of travel options and future network connectivity is basically useless.
That's all of them, historically, because there has never been a strategy for long distance travel in/to South-East Australia. Places that institute flight bans also have quite clear strategies for what trips should use what mode across the entire network.