I appreciate all the stranded pax and all, but I can't see this diversion as being related. It's an ULH fligh on the edge of an envelope it seems (or can be depending on weather, and we know the systems affecting NZ are still in the general area of the pacific) - it would be VERY costly to stop off the 22 in AKL just to pick up pax imo. Not to mention crew costs and all the rest.
in the time it would take and so on it would probably be easier/quickler to a) upguage to A330 some transtasman flights and'or add some 737's as extra sections - they could be there and pretty much back before the 22 would even arrive - and have that capacity.
I'm not saying it's impossible of course, but I think this is just weather related - those systems producing tough headwinds causing it - aircraft appeared to have departed on track for MEL and the decision was made some hours in - if they were planning this as some sort of rescue they'd have known that when leaving DFW/
Anyway I feel for pax on this flight which looks like it could arrive in MEL near 7 hours late tomorrow. Not blaming QF or suggesting anything other than the realities of flying west on such a ULH route (as NZ knows all too well with JFK-AKL, and one presumes QF will also face on the same route on occasion). As above, not unheard of in the older days of DFW-BNE-SYD)