Ideally I was thinking using one roll20 campaign forum to organize all the inter-settlement trading/raiding/other interactions, making a schedule so that all the different pods of players are progressing through lantern years at the same amount of real-time (ie: by this week you should be on LY 3, so as a group you can decide to do all of the phases as soon as possible, as late as possible, or split into the phases as you see fit)/
Each pod would then have its own unique roll20 so as to play out the track and hunt phases, and keep track of their survivors, event deck, settlement cards, gear, etc.
Also there should be some way to homebrew settlement-on-settlement violence, whether it be raiding, pitched combat, one-on-one champions' duels, skirmishes, group efforts against bigger monsters, etc. Trade can be done through barter (hopefully in-character, as I'd really, really like all settlement decisions to be made, but I can't force people to of course) or stealing/raiding.
Also the different settlements could have different starts (there's the official sunstalker starting, dragon-king and default, and I want to homebrew a Gorm-based one if possible).