you will NOT get crowds (4000+) filling large stadiums at odd weekday games anywhere other than for the occasional big important games in Perth/syd/melb/Bris.
Sydney died trying to do it, perhaps melbourne could , but every other populations base won't succeed.
see here
http://blog.id.com.au/2014/population/australian-population/the-50-largest-australian-cities-and-towns-by-population/
below is 1 to 21
Sydney 4,373,433
Melbourne 4,181,021
Brisbane 2,143,121
Perth 1,901,582
Adelaide 1,263,888
Gold Coast - Tweed Heads 605,134
Newcastle – Maitland 425,895
Canberra – Queanbeyan 418,856
Central Coast
Sunshine Coast
Wollongong 286,581
Hobart 206,560
Geelong 181,853
Townsville 176,035
Cairns 145,003
Darwin 119,597
Toowoomba 112,588
Ballarat 96,940
Bendigo 96,940
Albury – Wodonga 86,274
Launceston 86,188
thats an almost 33% drop between Perth and adelaide, and a 50% drop between adelaide and the next population, and a 66% drop between Adelaide and a "anticipated" canberra market that is the 8th largest population base ??
I suspect that Marvin, sucking of the biggest avable financial teat. and the NZ guys with all of NZ behind them, just do not "get it"
if the NBL wants to expand to a more marketable 12 team size ( 6 games per round for TV and internet to have at least a few products to sell) it needs to realise that syd/Melb/Bris/Perth franchises will be the odd markets that should survive irrespective of the structure, and that the majority of the rest of the league will actually be the "normal" markets where the design of the way of how the league is run ( for financial viability) will need to cater for to ensure some stability.
The immediate way would be for the big markets to give 66% of their "box office" to the teams from small markets. its a equalization thing. Like that's going to happen.