Guptill will bat well once every six occasions and **** for the rest. He's a horrible player with no plan B and has to be in the peak of confidence and form to put together an innings. Such a headcase, NZ should never pick him.
Ryder showed a lot more patience and I think this will be key, if he plays to his strengths, teams will struggle to restrict him and/or get him out while he's batting well. He just needs to realise that hitting aerial cover shots isn't for him when he can easily keep it along the ground. The moment they bowl at his pads, he has so many options for six, I'd also like to see him return to hitting the ball straighter like he used to.
Taylor starting to show some signs that he can bat time and innings, but he needs to study some of the Indians for how they create scoring options, he's still a bit too one dimensional as a player and his off side scoring against spin in particular needs to improve.
Williamson showed that he's still flakey, still likely to get himself out for a weak Mark Waugh style dismissal even when well set. Anderson showed that he's got power in the masses, a calm head on his shoulders and should only get better with time. I'm also liking McCullum down the order, he may not be hitting big scores yet, but he's providing great momentum at the end. I'd almost consider opening with Williamson and Ryder, dropping Guptill completely (flakey ****er) and alternating either with Munro,Latham or Neesham depending on need in the middle order. Watling could come into that mix too as a bat.
Bowling wise, Milne still isn't the finished product, none of the bowlers seemed to be able to find the yorker length on demand (unlike Kumar, who bowled exceptionally) and for some reason, McCullum needs to be reminded that Ryder and Williamson not only provide some very decent middle overs, but they generally get wickets while doing it too.