All I can say is thank God the series against South Africa goes from short to long - starting with T20s to ODIs to tests - or I reckon the Black Caps would get a towelling in what should be the defining part of the summer of cricket: the three test series against South Africa.
Zimbabwe have been so poor that they simply are not providing any meaningful preparation. Yes, the new players are getting 'international' experience, but that is really just experience to the peripherals of international cricket, not the difficulty of international cricket. Quite frankly, our older players would be better off playing provincial cricket.
That said, it is a Godsend that when South Africa's nasty-fasties arrive, along with their intimidating batsmen, our players will get to heighten their cricketing senses the right way round.
The shorter the game, the more teams are brought together and the more chance comes into it. One performance can have a disproportionately high effect on the end result.
There is enough potential in the Black Caps to hope one or two have their day in the T20s and those that are caught on the hop by the extra intensity will get a well-timed wake-up call. They can build on that through the ODI series and, come the tests, should be more prepared to deal with the relentless quality that comes with South Africa.