I personally think Tasmania's best bet at a team is relocating North Melbourne BUT promising the Kangaroos that they will have 11 games in Tasmania and 11 games in Melbourne (satisfying their current supporter base who will get to see their team in Melbourne even more). It would take some doing in terms of logistics of the draw but I think it would work.
How on earth would that work? Even if they rig the draw to the maximum extent possible, you could only give them 9 away games in Victoria. And no team is going to sell their home game to play in front of 10k in Melbourne.