The ability to add non gameplay buttons such as /bazaar and /trader to the selector window in place of some buttons people dont use. I guess in essence allow for 2 or 3 UI definable hotkeys that can be placed in any UI window.
For the game to have a memorize gear feature. IE with all the multi slot items in game now sometimes they dont go back were you want them so add in a "save button" to inventory and right click to your corpse and "Auto loot".