Thinking about this and the various suggestions and thoughts of people on here, I don’t really think it could of been done much differently to how it has panned out.
Victoria being such a huge market and rusted on supporter bases meant losing any clubs risked losing people to the sport.
People can complain about it being Vic centric but in terms of the people in this country who love Aussie rules Victoria counts for at least 2 thirds of that. It’s basically a population a couple of million greater than NZ obsessed with a sport to the same extent NZ is with rugby union.
Now the OP did have a balance of clubs which reflected this, but I can’t see kicking out Vic clubs or relocating Hawthorn fresh off a premiership and 4 consecutive GFs off to tassie.
Also as others have mentioned the chosen SANFL and WAFL clubs wouldn’t of had instant converts of other clubs supporters or got everyone supporting them like the eagles and crows did when they came in.
I like the idea of promotion and relegation but the idea falls apart when you think you may have years with states not represented at the top level, which would be disastrous for NSW and QLD.
Ideally you wouldn’t stick to a 22 round season though, was brought it for a 12 team comp when it has been 18 rounds from around the late 20s to late 60s (minus some war years).
Also in alternate time line scenario I can’t see the state leagues really thriving that much even with a free day. VFA maybe more of a chance due to Vic being a bigger market but WAFL and SANFL would of struggled a fair bit.
That's a pretty good summation of the drawbacks of this hypothetical. That hypothetical abandons the Hawthorn fan base of the time AND it splits the nations fan bases of the time. In effect it doesn't shift the fan base from the original state leagues as they were before this reality or this hypothetical.
You could boil it down and dissect it as many times as you wish and you'd probably still end up with what we have now, that being the most practical.
Sure it's not ideal from an equity sense but what we have is due to the market saturation in Vic - a blunt reality if you will.
I find it amusing all the whinging of non vic supporters............................ all they had to do - at the time - was turn their back on the nationalised VFL and the state comps WAFL and SANFL would probably be a lot stronger than what they are now.