I think we'll eventually see a drift back to 7 day QT. Probably not for high incidence countries, but at least some degree of moderation from this only applying to NZ.
Either that or Jacinda bottles it and we can start creating spreadsheets to track rolling average case numbers in the run up to a revolutionary HK/NZ covid secure travel bubble with one Cathay and one Air NZ plane allowed to fly each week. Mandatory 3M disposable jumpsuits, goggles and gloves for all.
Staying here is now, more than ever, a very sharp lifestyle and money accumulation decision. I can see there being a proper exodus of expats for whom it is no longer worth it after the Xmas holidays... everyone i know who hasn't already travelled over summer is now at breaking point and jetting off to see family.