I suspect that over 90% of NZers would be fine on a 7kW home charger.
As batteries get bigger there is less & less need to hit 100%, charging to 70 or 80 percent will be easily enough for most people's commute - and they would still get home with comfortably enough power left to be able to go out for the evening.
With long trips the need to charger from near zero to a full 100% will almost never happen when driving a longer range car. I could get from home to Cape Reinga or from home to Wellington in a Model 3 performance, with only a single stop to top up to 80%. Basically I'd run out of North Island before the range was a problem. Even a 100kW charger would be enough so long trips were no biggie.
My 24kWh Leaf would be rubbish on a long trip, but it does get me to work & back (70km total for the round trip) at a low cost and with great reliability.
Oh yeah, the whole spiel some people get into about needing to do Auckland to Wellington without stopping is such a niche scenario. A lot of people never do that and if they do it's maybe once or twice a year - those that do it regularly is a very small number.
The trip I recently did in my Long Range Performance put to bed any issues I had with range. I started off from staying in the lower Tararua area with a charge of 70%. To get back to Auckland the car wanted to make a 20min stop at the Taupo supercharger and then we arrived home with 15% left - that was with the AC working hard to keep the cabin at 19c as we drove through the Hawkes Bay with an outside temp of 30c. The car was back to 80% overnight at home.