It is a different region, that's the point of the Southern hemisphere group having a shot one year while the next year the Northern hemisphere gets to host it. As pointed out already, we have seen more international teams play in the last few years than at any other time outside of a wc, it is giving other nations a chance and believe me, if and when a team or teams step up and consistently beat the likes of aus, nz eng, they'll expand it.
Hopefully you're right. I just like the idea of a more consistent and well rounded competition for the big three each year, because I think the team that needs the most in terms of development is England... they haven't beat the mighty Roos in a series or tournament of any type since the early 70s, and that's just astonishing given there just isn't that big a disparity in the resources between the two countries.
Some people argue the English suffer because of their weaker numbers, but that doesn't hold when you look at them and compare it to the reverse situation in Union.
To illustrate what I mean, the English have a little over half the number of registered League players we do (about 240k to our 460k), but have their own fully professional tournament with 14 teams, meaning their number of full time pros is comparable.
Now, compare this to Union, where Australia have less than one TWENTIETH the number of registered players the English have (86k to 2.5 million in England), and only have 5 pro teams compared to 12 in the UK. Yet the Wallabies are plenty competitive with the poms.
Whilst these are absolute numbers (England RL don't provide a breakdown), what it shows is that there England's troubles are clearly cultural and structural, rather than a matter of simple arithmetic.
The question is how does Australia help them? Having a strong England, much like having a strong New Zealand, is critical to the credibility of the international game.