Yeah, I think that ship has sailed.The AFL had a chance to strengthen NM’s ties with Canberra back in the mid 2000’s, but they encouraged them to ditch the capital in favour of the Gold Coast - we all know the rest. Despite their efforts in playing Canberra home games over a number of years, NM failed to gain much traction there (way less support than what GWS have there now) and this provided some extra incentive for them to leave Canberra. NM’s decision didn’t go down well in Canberra at all. Your proposal might have had a more positive reception back then, although now you have:
a) a club that doesn’t have fond memories about Canberra, is in a vastly improved financial position, and resolute about remaining a Melbourne-based club.
b) a region that rejected NM once before and virtually said “they’re not welcome back”.
Not exactly a match made in heaven
Looking at things logically, and assuming Top End round doesn't happen, with the 11 home, 11 away, 1 gather round to remain the status quo, I think the best expansion path forward looks like this.
19. Tasmania
20. Canberra
Giants play 2 Newcastle games, Suns keep playing 2 in Darwin since the Hawks will likely play 3 in Cairns. Saints play 1 in Auckland. Roos back in Victoria; Melbourne, too.
21. Newcastle
22. Cairns
Newcastle play 2 games per year in Auckland as they're starting out, Saints back to Victoria, Hawks take their 3 Cairns games to Darwin, Suns commit to Gold Coast full-time, ditto Giants in WS.
23. New Zealand
24. Darwin
You're pretty much done after that. North Brisbane Kangaroos if a second Brisbane team is required.