I think he's reluctance is more to do with how the got the captaincy more than anything else. They're certainly missing Ross Taylor as well, but this is again down to their new coach, although he says he will be back for the series against England.
I agree with Jason that they need to look at where cricket is headed, but they're always going to be fighting against rugby union, and right now the All Blacks are on the crest of a wave so I would imagine it must be very hard for them to get the funding and support staff they need to be successful (I could be seriously wrong here). If I'm honest I don't see NZ being a force in cricket again, almost like the Windies, countries like South Africa, Australia, India (possibly) and England have the set up, players with talent and knowledge in place in order to be successful for a long time to come.