As a Story of Seasons game would be wonderful, it would be nice to have an alternative place where we could create a deeper relationship with some characters and raise the children fruits of that relationship away from the Church or the lechers. I would be able to take areas that were quest locations like the of that family, the Woodson, and claim it as their own. A great alternative ending would be to stay in the cursed lands, establish a clan, hunt and kill monsters and criminals, note that they introduced new creatures, it would be appropriate for the game to have a bestiary similar to that of FFXII.
In general, Jiro, I also like your idea.
for example, a quest where Lone is tricked into buying a destroyed estate in contaminated lands.
Which can be restored, defensive structures can be built, and refugees can be accepted. To do this, the game already has all the resources stone, wood, ore. Every day, attacks from monsters and bandits will occur more often. If Lona falls into slavery, the estate is burned.
And rebuild it again