Thanks for the reply, I haven't seen these figures of yours, but our frigates do not have that heavy mast the Australian ones have, and I don't think we have the harpoon launchers anyway, given that the RIM-116 is similar in weight to the Phallanx, and given that those additions to the australian systems undoubtably weight more than an additional VLS system, as well as (in the case of the mast) being much higher, I don't see how this would be a problem, at least not as much as the australian modifications.
And I would use the extra VLS capacity for some future advanced ASM, like the NSM, Perseus, LRASM, then maybe our navy would not be considered such a big joke. Now consider this, how much of that actually makes its way to the core functions of the navy, and to the airforce for naval reconnaissance, and what could be done with say 3.6BN NZD (2% GDP), almost 3BN USD just for the navy, naval reconnaissance, and perhaps even a meagre air-force/SAM capability.
I am not, 2% is the nato minimum, the new zealand government is spending 82Bn or 45% of GDP, that would equate to 4.4%-8.8% of current government expenditure if total expenditure remained unchanged. Considering national security is a core government role, up there with law, order, and enforcement, it is not unreasonable at all, and should be a priority, with luxuries like wealth redistribution coming afterwards.
If we arent going to maintain a credible military capability then we may as well save what we currently spend and disband the armed forces entirely.