This series has just been the same old frustrating story as a NZC fan. Some of the selections were bizarre, and the performances of some players were massive disappointments.
The obvious positives were Gillespie and Williamson, along with the likes of van Wyk.
I have to agree with ferg512, Vettori has to go. Imo you pick your six best batsmen, a WK, and your four best bowlers, which considering Vettori was batting seven and took three wickets in a lot of overs, he is not one of. Go back to playing ODIs/T20s where you were one of the best bowlers in the world, instead of what I'm sadly to say is wasting a space in our test team.
Williamson's played his two best innings in the series when he came in very early on, therefore he has all of the goods to bat three. McCullum should move back to opening, which means Flynn and Brownlie can occupy five and six respectively. That leaves one of Watling or van Wyk to bat at seven, both of whom I think will do a more the capable job, and four bowlers depending on the conditions etc.