I have been wondering this myself lately as another returning Australian player. Having moved my 50 to Master Dar'Nala when the option came up I have found the server to be quite low in population.
So I am currently debating doing a reroll on either this server or on The Harbinger in a vain attempt to find some more people
But after reading this I reckon I should "do the right thing" and support my fellow aussies
... which then leads to the next question of "Imp or 'Pub?" Are both sides fairly even or does one side have significantly more activity then the other?