New Zealand is okay as long as you understand its limits. We have had problems with people picking their hometowns/nations and trying to make great powers out of them (my noob-self included, back when I first joined PoW). It was so bad we started calling them Hometown Super-powers. So yeah, New Zealand is fine as long as you play it realistically and understand that you're probably not going to carve out an empire. If you play it well, and for long enough, you may do something great with it, but New Zealand is not exactly the kind of nation to go around conquering shit or something.