NZ definitely doesn't want an OFC qualifier on their schedule in June 2017 window - when they're building up for confeds.
It's true they could have a schedule with no 'double headers' for NZ and still keep June 2017 free for NZ, but that leaves a double header for Fiji and NC in june 2017.
If anything it should be the way everyone else goes, for marketing, attention, intensity reasons. (Other confeds have more going generally for them in this regard, but still)
Edit: I guess there are potential collusion implications.