Correct me if I'm wrong but I assume NZ and the Aussies will become republican once Liz takes her last breathe
That would probably depend on how Charlie does as King. It's true (as has been pointed out already) that patterns of support for Republicanism in Australia are partially generational in character and that
specifically the Republican cause is linked with the generations that were young in the 1960s and 1970s (SHAME FRASER SHAME etc), but that doesn't mean that a turnaround is impossible, particularly with a new and less PR friendly monarch. Fundamentally the issue is not an important one, which means that minor changes can theoretically cause large shifts.