I have to challenge you on your populist Labour viewpoint here, Graham!
The charge that the NZ Health system has been run down over the past ten years presupposes it was in a good state to start with. It was not. Successive governments, regardless of branding, party, or resident health minister, have under-funded, and perpetuated mismanagement in the heath sector for decades There have been large numbers of missed opportunities for betterment since the 90's and even before.
Any government will tell you retrospectively that they did the best they could at the time, and you can be sure they did. If you had the opportunity to read the cabinet papers, and follow the decision making trail and Governance, I'm sure it would all read well. You can be sure that our elected officials truly did what they thought best, within the constraints at the time. The retrospective view always gives greater clarity, and is clouded if you don your blue-blocker sunglasses.
It would be significantly healthier (pun intended) to acknowledge it's all a bit broken, and look to the government of the day (today)to put in changes that will truly make a difference. It's futile blaming one side or the other; these things were decided by our government of each time... the consistent thread. The cost to do this? I'm sure it's a number so big that the budget would need significant rebalancing, and a great deal of courage. As much as our system is seen as broken, it's a lot better than some of the other countries I've visited. NHS excepted; my limited view is that the NHS works pretty well.
I certainly agree that the massive number of semi-autonomous DHBs in NZ is a total and complete waste of resources.
Perhaps someone could code up an online game called Fantasy Niuzillund Government... a bit like a cross between Championship Manager, The Sims, World of Tanks, and SupermarioKart, only instead governing NZ Inc (or use the NZ Collective skin, if you prefer)... one could trial radical healthcare restructures (note I avoided reform), and find the funding to make it stick, all the while managing the flow-on effects of short-changing other areas of the economy. It'd be a hit!
Cheers