I reserve my opinion on Watling mark II.
He is a fighter, not a dasher or elegant textbook. Fighter's are good. Steve Waugh was a fighter. Allan Border was a fighter. He was accused of only having three shots. Boycott was a fighter (and boring).
But BJ looked so in control in England. Almost elegant at times. Has he been playing above his potential of late? There is a good argument for that. But for how long does it continue before his perceived potential is reassessed? Fighters are not as talented as other batsmen, but they can score enough runs to be talked about among the best ever. Knowing what strokes that you do not have the talent to play with sufficient success (runs achieved as against dismissals) and not playing them is smart, even if lacking talent. Same for leaving or defending the balls where the shot selection would be a personal weak shot.
I hear what Hurricane is saying. But BJ has just been playing brilliantly for NZ for two years now. His first class season between England and Sri Lanka was not that fancy.
Is he growing another leg when he plays for NZ? I don't know. But I think he is a brilliant little cricketer for his performances over the last two years and hope that it continues. He plays test cricket smart, that is good enough for me. He is definitely maximizing every single drop of talent that he has. If he can continue to do that, he will be our next test captain. People will follow him.
I think he has earnt the right to bat 6, even when keeping. Neesham, Anderson, or a new batsmen can make their way in the team at 7. There are two reasons. Take some of the pressure off a new guy or an allrounder with the bat, and also that Watling is not a dasher so as to score quick runs with the number 11. I'm sure he will bat more often with the tail, but he has earnt the opportunity to bat with the specialist batsmen more regularly.