Looking over the horizon, I see that Souths has announced that they'll be taking a game each year to Perth in 2025 & 2026 - which has been picked up as another hint that Perth (Western Bears) may debut in 2027.
With that in mind - if Souths are keen to keep playing a "home away from home" game each year, maybe they should be talking to the powers-that-be in Adelaide?
It strikes me as a cool pivot for Souths to go from "helping to keep the flame alive" in one AFL city to doing it in another - South Sydney in South Australia has a cool ring to it too... and you never know, could be useful groundwork for an eventual expansion team there - as part of the NEXT expansion phase (teams 21 & 22).