Having QF direct flights to YVR on a regular basis would be very helpful for OneWorld Circle Pacific fares, the current arrangement requires YVR pax to schlep through DFW and LAX before heading across the pacific.
Star Alliance circle products do a much better job of servicing AU/NZ.
I'm guessing that ANZ and AC wouldn't be running flights to AKL, BNE, SYD and MEL if they didn't think they could make money. I've always wondered about QF's DFW flights, DFW doesn't really seem like much of a 'destination', although AA has great connections to anywhere from there.