There should be NO other teams added until they league can sort its shit out at the moment. Once all the current teams can sustain themselves financially and have a decent fan base, the league is publicised and marketed well then it is pointless. It's been proven enough over the last 10 years... Unless somebody coming in can put CASH up enough to cover the entry costs, salaries (all personnel), running costs etc etc etc, for about 2-3 years, then no person should be given a team right now. The league needs to treat this like a business more than they do, so they should expect any new team to be at a loss for 2 years. The new teams should also have sponsorship dollars commited on their proposal to the league.
League also needs to open doors for more imports and make salary cap the same for all players, so imports can earn minimum also. The points cap needs to be kicked out too, it is holding back the league so much and is out dated.
In the end, Melbourne or another NSW team are most likely, and probably the most viable, along with maybe Tasmania?