Like it says people start putting out.
I'll get the ball rolling.
1) Shops (the ability to make a shop and sell or buy stuff).
2) Creatable junk piles (when you drag an item out the inventory window instead of discard it's added to an invisible number on the till under you that will at some point become a junk tile).
3) Small structure purpose (have them do things, like tent give energy regen bonus etc).
4) automatic tribal zone expansion.
5) nameable bins.