With the one day side though, you are really just rubber stamping Morgan's decisions and will be similar, one suspects, when Buttler inevitably takes over. There is a long production line of talent, and a "house style" of playing.
There is a lot more to do with the red ball side, and Mccullum may be the ideal man - one of the things you noticed with his Kiwi sides was that they played positive cricket, but that that did not mean everyone was pushed to be the same - the more classical players stayed technically the same, but we're encouraged to show intent. You imagine that Sibley, for example, would be encouraged to rotate the strike rather more.