Nobody I know is counting on flow. At the moment it's about an opportunity most Australians are simply not going to get in Australia. There are Australian E3's commanding 50 to 75 seat jets in the US after 2 and 3 years as an FO. That is simply not going to happen in Australia. And all this talk about unrealistic expectations is a bit moot really because the expectations of most are being exceeded. If pilots got to live two lifetimes in Australia you still won't see aviation on the scale it happens in the US. And you'll never get to learn the weather experiences that take place in the US.
Flow, whatever, Green Cards, whatever. It could end tomorrow, but so what. It'll end in Australia before it ends in the US.