Personally I'd like both the nene and the kiwi - both are WAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAY higher on my list than the shetland pony, which I have zero desire for... Even limiting to Scottish domestic animals only, the highland cow would be better (though i don't want it either).
For an island pack, though, if it's between the Kiwi and the Nene, I'd prefer the kiwi - Why? Well, lots of reasons but, if you want an 'objective' one (there is no reason why my preference should be objective), then it's because some other waterfowl (i have no
particular desire for the nene above other ducks/geese/ swans etc.), could come in almost any biome, conservation or region pack and, therefore, has many more chances to be included in the game. The kiwi though, if it doesn't come in an islands pack, simply won't be included in the game at all. (also Kiwi are cuter, more interesting and provide an animal for a country that, so far, has no representation. Also their eggs are stupidly out-of-proportion (see below), which is cool.)
