On expats: I can only speak from my own experience, and of those that I've known personally - both here and back in Oz.
My experience with old Continentals like myself is that we have moved "for good" in our heads and thus we support our local teams here, because this is now our home. Otherwise you are just stuck in the long-gone past. Ironically, and somewhat unexpectedly, this is also to do with having to adopt a new language. This (language) draws a very sharp line between "back over there" and "here now". It requires you to make a conscious decision as to who you are and where you live.
In contrast, relatively familiar cultural surroundings, language, and English heritage in NZ may put less pressure an an average expat Brit here to even pose that kind of question .As a result, one could say that they physically move here, but maybe not quite as much in their heads. This could then contribute to a lesser acceptance of what they find in the Antipodes, and then leads to the infamous jibe of a "whingeing Pom".
Add to that the relatively full-on saturation of the local football coverage with all matters EPL at the expense of say the HAL, and it becomes easier for the expat to ignore the inferior product (A-League) in favour of something better.
Ironically, the same does not apply to small local football clubs here,where many UK expats participate in both playing and managing, enthusiastically and effectively. Clubs here in ChCh thrive thanks to their daily grind. Such hands-on involvement promotes loyalty and a long-term commitment, but that is probably harder for the Nix. As there is only one Phoenix, for those UK expats who do not live in Welly the involvement / support / is probably limited to TV viewing only, and so it probably loses out to EPL.
These are only my thoughts and I am sure that experience of others with this will be different - happy to hear your views.
What I find though is a lot of the NZ eurosnobs (and a good chunk of those are people who went to the UK for their OE and came back to NZ supporting a team, although there are definitely the NZ fans who have no real connection to a team and have never even seen them live) don't actually watch the premier league, they support a team and follow them based on highlights packages, articles in the paper at smoko (they almost always follow one of the big teams), and whats on the news.
Because of the time that Premier League games are played not many people actually watch them live here. Because the Phoenix are playing at times that are watchable we should be able to get a real connection to fans, it's just about profile. But first they need to be able to support the team and follow them with a minimum of effort like they can with the premier league, by having discussions over the smoko table. That means more coverage than Man U gets because we need to break that bond first.
So buildups before games on the news and not just results, player profiles and information, articles in the news, etc. I'd love for us to get a breakfast cereal partner and have trading cards with the players names and profiles so that kids know them by sight.
One of the complaints that people have is that the Phoenix have no stars like the Warriors do and then they rattle off some names that I've never heard of. This is the same phenomenon that the European leagues have. Everyone's heard of Rooney or Ranaldo or Messi or Beckham. But not many people have heard of Bonevacia, or Riera or even Barbarouses. And the only reason they know of these people, with only a feigned interest in following the sport, is because the media gives them profile.
Make the players house hold names, put the team in the media, and we'll convert eurosnobs. The best way to do it is through their kids, as they all returned from the UK to raise a family. Hence careal trading cards.