China Southern reverse-roster "bases"
It's actually a little more complicated. At CSA the fleet manager is "God" and decides these things without any other managerial interference. The Airbus 330 pilots with Australian citizenship are generally quite happy with their numerous reverse-roster "bases" in Australia. I have seen their rosters and they're similar to pilots at legacy airlines in the US and Europe.
For the people wanting Europe and USA basing, it's a bit of a hypothetical. Yes they're using it as a recruitment tool (why wouldn't they?) but based on the success of the A330 Australian bases, there is no reason to believe that it's an outright lie. The story at present is "we need eight line-checked-and-released captains to request a reverse-roster base, then the fleet manager for that type will decide." For the 777, it is expected; for the 787 the answer is a very open and honest "not gonna happen."
People wanting firm guarantees of such things are, quite simply, in the wrong business.