One of the things that i miss while playing on dayz is such a simple feature as dig to hide stuff.
This feature could be a great way to hide stuff to prepare your way across chernarus.
This shouldnt have an issue for server performance, the coordinates of the object will be stored in a DB and when a player with a shovel for example tries to dig that will make a query to the database for objects in a 5m radius for example. The current dig animation could be used.
If they dont want this to be the common way to store loot they could force you to use a barrel, an amunition box or a backpack, even just drybag to keep your stuff safe.
Let me know what you think about it.