Renameable containers would be amazing. Typically in OS I would take containers of different types (A barrell, a basket, a backpack, etc) Stuff that looked different and remember which container held which kind of stuff. Being able to name them would be so much better though!

"You either die the hero or live to see yourself brought back in the sequel as an angsty magical terrorist."
-Serious brownie points if you get the character to whom I am referring.-