Maybe sending Potential Young British coaches other there might be the answer?

which would benefit a handful of coaches.
Why not, instead, find what it is the Australian coaches do or who they learn from, and bring that over here?

Besides, it's probably the Kiwis that we should be looking at - with one full time pro club and a significantly smaller population than Australia, they manage to generate players that can beat them.

Very true!

although a Super League club hired a NZ coach who towards the end of his tenure was rumored to have lost the dressing room due to his coaching...

I think a large problem is also Football in this country, And also RU. Both pay more money and are bigger sports with more media exposure etc... There will be thousands of potentially good League players playing these sports, and that is probably why we struggle with the depth of quality.

We weren't discussing Australia?! We were discussing the NRL (which happens to be based in Australia). The NRL methods, the NRL coaching techniques, the NRL youth system. Which has also produced the overall majority of the NZ players.

We were discussing Graham & Roby playing in the NRL, not playing for Australia. Why should we be looking at the Kiwis? As you've just pointed out, they've only managed to produce one full time pro club.