Kia Ora Mimpi,

I would say when it comes to trans people in Aotearoa 'Fa'afafine' would make up the bulk of the trans-population and Auckland has the largest Polynesian population outside Polynesia, especially south Auckland...

You might like to view this
http://www.nzonscreen.com/title/takatapui-2004 which was produced by Maori TV, sadly it run out of funding and as stopped for a while...
In short Takatapui is the umbrella term[a Maori word] for LGBTQ
http://en.wikipedia.org/wiki/Takat%C4%81puiMetta Zenda