once a team is relegated they will never get back to the top tier - how do you expect to fund a second tier comp - sponsors wont be sponsoring teams in a second tier comp and once the money dries up that club would go into administration and be gone forever. Players will want out as well - have something in their contracts that if the club is relegated they become free agents.
Population , money and interest isn't there for a 2 tier comp.
Works in the UK, Spain, etc for the football. The English system has 5 tiers - the EPL at the top - where relegation and promotions happen in a population of 65 million. At least 20 teams in each tier. We would obviously start much smaller, say 20 + 14 - I've not suggested we start with 20 + 24 for instance.
Australia's economy is massive in comparison to even Spain - we have approximately the 12th largest economy in the world - so the money is there. There's also a corporate savings glut globally, and I'd imagine merged teams would enjoy the benefits of larger crowds/home support/merchandise sales. Fairly sure Burleigh and Newtown have sponsors in their respective second tier comps?
Not sure the population thing is much of an argument tbh; we're still in the top 50 even now and I'm talking about a system in place in 15-20 years, not in 5. Actually when combined with GDP, on a per capita basis we're loaded.
Since the EPL came to fruition in the early 90s around 50 teams have been in the comp. Opportunity is there for smaller clubs to get promoted and even win (like Leicester) in an actual open competition. It's now much better regulated with the FFP rules in place, although it still needs improvement - luckily for us we'd be basically starting from scratch. Silly argument to say clubs could never get back when it happens repeatedly. Also think broadcasters would enjoy two comps to fill the airwaves, such as some Tuesday and Wednesday night football - would the solidarity payments that could come out of that help prop up struggling clubs who have been relegated?
Fine, players might have clauses, but again we'd also have a proper cap in place so teams couldn't stack - the NRL would have to register the contract too and they'd no doubt do their due diligence to ensure the competitions integrity isn't destroyed.
Maybe there isn't the support from fans but I think everything else you stated is somewhat debatable tbh. Have you seen some market research not just a few anecdotal posts on some forum or comments from a few friends?
Seems to me be a scoping exercise in terms of competition sizes and time frames more than anything else?