I actually think an Australian adaptation of the US-format could be a winner. There's a pretty strong following of Survivor in Australia, and I think if the producers piggy-backed that they could reel in the fans of strategy.
I won't discount
@Zcsund1234's argument about public influence, though - Australian viewers like to have a say and it does provide revenue. But as
@Kingston said - there are ways of implementing that which don't completely destroy the format.
I'd just hope they look at what worked and what didn't; so we don't get shit like America's Player / Team America. Maybe something where the public vote to put someone up after the HoH is determined, but before the HoH decides on the nominees. That third nominee can be saved / save themselves using the PoV (so they don't get screwed); and the public have the chance to eliminate someone they're not a fan of.