I want a FO or TES game that’s just a modder playground.
Build the world, don’t populate it with anything.
Divide the world into a grid, let modders submit mods to a central database and register them with the grid squares they alter.
Let the game download an assortment of mods (maybe using user-defined tags to preference certain content) that fills out the world, using their grid square registration system to ensure no overlapping / conflicting content.)
Let players rate content they play.
Reward the modders who made popular content in some way.
Obviously there’s a lot of glaring problems with this, but in my head, it’d be awesome.