Add something like purchaseable buildings, which you can set permissions (entrance and home and possibly build) for if you own. Permissions would be All/Build/Full/You/Clan (for clans, which should also be supported).
You should also be able to place containers, rather than them existing beforehand, in wherever your home is set. If you change your home, any containers you own in your old home will first be marked as requiring movement and then be set to publicly owned if they're left for too long. Publicly owned containers are removed when emptied, and are accessible by anyone. Certain containers could also support security, which allows you to set who can open them (same permissions as purchaseable buildings). Containers could be:
- Locker - Holds any weapon or armor if armor exists, security enabled, small number of slots (4 or 6).
- Ammunition Crate - Holds only ammunition, no security, ten slots and ammunition stacks infinitely in it.
- Weapon Rack - Holds only weapons, no security, massive number of slots (16 or more). I presume weapons will not stack.
- Packing Crate - Holds any item, no security, massive number of slots (24) and uses default stacking.
- Shipping Crate - Same as Packing Crate but with security.
- Display Case - Holds any item with default stacking, has security but allows anyone to look in it (they simply can't do anything with the contents if they're outside its security), maybe ten slots. Good for home shops!
I do assume that your interiors will simulate the look of bricks (in the case of manmade buildings anyway), so furniture being made of bricks wouldn't be out of the question, correct?
Also, containers that you own should be transferable in ownership to other people manually (ie, of your own accord).
Remember, I'm not demanding, just putting ideas out.