In fact it has a franchise structure that makes it all but impossible to reunite, because the clubs that comprise the APL would have to vote their own organisation out of existence and write off their licence fee purchase.
That will not happen. The only way to reform the present exclusionist model is for the A League to go out of business.
However, I would add, Mono, that the derogation of the A League by those from the pre A League model, the one I grew up watching and playing in and loved (and still do), is neither realistic nor helpful. The A League clubs (excluding the recent debacles of WU and Macarthur) have been around for 20 years now and have valid, if short, traditions, and, for the most part, support that significantly exceeds on a regular basis that of the traditional clubs. This must be acknowledged and respected.