Have you checked the price for fighters recently. Havy you notice that the trainers/light fighters are about half the price of a fighter? That's why I don't think New Zealand will ever have full fledged fighters. Their price! For example, Hawk aircraft sell around $15 million US dollars, that's $30 million New Zealand dollars, plus anothrer 40 percent like the NH90 deal for spare parts and support, the price is up to $42 million per aircraft for light fighters/trainers. A full fledge fighter would run over $90 million each. Also notice that the Hawk and Golden Eagle light fighters/trainers are much cheaper to operate too. You'll never get two squadrons worth, considering the upcoming need to replace the Hercules and Orions.
It was the same with the A-4 Skyhawks. By the time New Zealand received them they were trainers/light fighters for the US Marine Corps. New Zealand couldn't afford F-16s back in 1980. At about the same time Australia was buying F/A-18s. New Zealand couldn't afford them either. Until the sweetheart, cream puffs from Pakistan became available, New Zealand couldn't afford F-16s. Well, that sweetheart deal is gone, the cream puffs are gone, those aircraft have been swallowed in whole by the USAF.
I have noticed that this government chose to separate the NH90 and EC-135 buys. Towards the end of the next decade New Zealand is facing a huge upcoming order to buy 5 Hercules and 6 Orion replacements, more than likely half that number for new P-8s. So New Zealand will have to buy 5 Hercules and 3 P-8s. Have you checked their prices lately? Easily $2 billion in US dollars, $4 billion in New Zealand dollars. It will more than likely take the entire decade to pay for them at the current rate of procurement.
While the current government saw the opportunity to eliminate the air combat force, it won't be able to eliminate the maritime patrol assets, as they are used every day, and the Hercules transport force. They will have to pay the piper! If New Zealand wishes to reconstitute the air combat force, it appears all they may be able to afford are the cheaper, second rate, light fighters/trainers aircraft. While they don't have the range of a full fledge fighter, they will provide the maritime strike and close air support, comparable to the air threat to New Zealand.