Make a town, where bots walk around and go into cafes and stuff.
This, sort of.
It would be cool to develop a "citizen ai".
Basically, bots go about their buisness, wandering, interacting w/ each other. You could add special events (if a bot gets shot at or something, then the bots panic and run and hide.
If you don't want to make the town, just use beta/acm city.