Yep, rotate it or at least organise it based on the number of teams in that city, so MCG gets more GFs but not all of them. Based on those 4 cities, and the teams in each city, 6 out of every 16 GFs are not at the G. When Brisbane gets a big enough ground, they join the rotation with 2 GFs every 18 years.
This ensures we aren't having two Vic sides playing GFs at interstate venues regularly.
Still will advantage Vic teams but less disadvantage for their fans.
Name the next few venues in advance and then it's luck of the draw as to who happens to get a home GF instead of a neutral venue.
I got to say I love the GF at the MCG, but I am also in favour of always doing what is right for the league in a national aspect.
I would be in Favor of the MCG having it 2 times out of 3 years.
2019 MCG
2020 MCG
2021 Optus
2022 MCG
2023 MCG
2024 AO
and so on.
But at the end of the day its at the G for my lifetime so to be honest I don't care what they do after that, the chances of me following this Hybrid sport still in 10 years is pretty remote.