Hesson's greatest hits: Which of these was his biggest achievement?

Over nearly six years as the head coach of the New Zealand men's national team, Mike Hesson oversaw one of the most successful periods in their cricketing history. In the words of their former captain Brendon McCullum, he is the "best coach the Blackcaps ever had", which, as tributes go, is about as good as it gets. Listed below are a list of achievements from Hesson's time as coach. Which of these was his greatest?