I want a game that's somewhere between Animal Crossing and Dwarf Fortress - something with the extensive world gen of DF, but with cute goofy animals, and maybe a little less grisly. So less sudden death by wildlife/zombies/collapsing ceilings, and more adorable wagon travel, trade and founding of settlements - which you then get to live in!
I go back and forth on how much of the dwarf fortress vibes to let in. Probably it'd be a bit distressing to see your adorable villager friends just straight up die. On the other hand, it would be kind of interesting to experience them getting old and passing away, plus racking up memories, hangups, traumas and complicated social connections like the dwarves do.
Me and my SO had this idea (based on where we live lol) for a game that's like Animal Crossing where it's all cute and you build houses and a town for cute animal characters, except they're all shitty crackheads so like you build a park and the next day there's shit on the floor and all the streetlights are broken, you have to fish in the river to get old bikes and shopping carts out and so on.