Parity, why not. The OECD sees the AUD overvalued on a PPP basis by "only" 19%, which sounds a lot but pales in comparison to e.g. NOK which is 40% more expensive than the USD.
Parity is just another 10% away, putting the PPP difference at 29%, nothing we haven't seen before. Historically, major currencies have always reverted back to their purchasing powers, but that can take years, sometimes decades.
I have 25% of my networth in long NZD & AUD right now and to say I am nervous is an understatement. I think by November I will radically reduce the exposure. They can run to parity without me