The way I see it it is a lose - lose scenario for a lot of people.
The other Sydney clubs are pissed off at having their potential support base diluted (certainly Sydney FC does) - sure enough we heard at the last year's AGM that no new team licences were to be handed out anytime soon.
Equally, even if they don't say that, owners of a far flung club like Perth may worry that even if they don't say anything now, it can be their problem one day too, as they may one day be also seen as "not conducive to the league growth" - all it takes is to shift goalposts.
If FFA really wanted growth, they should revisit the situation of NQ Fury (whose supporters are still furious about the chop) and Canberra (whose supporters are still furious about not getting a licence despite fundraising). The second team in Adelaide never got the license thing off the ground, so it looks like really just Sydney and Melbourne all of a sudden.
And of course we are furious and gutted if we get the chop. So who wins / gains here? Beats me.