and what happens if they postpone the DOH AKL further? will they re-accomodate pax to AKL or say to SYD?

I 'need' to be in NZ / OZ for my annual trip in Feb / March and I am seriously tempted by this.

have to admit 17 hours 30 mins on the way back is a LOOONG way to spend on a plane and I had gotten used to my BA F flights to SYD but this is pretty much half the price of the usual BA ticket so not sure I can resist....