Maybe I'm the only one but it is not uncommon for me to accidentally grab and move a toolbar, chat window, map, etc. in the heat of combat. This can be very annoying, especially as I tend to not notice until I go to use the moved item and find it hidden behind something else.
Can the UI lock be changed to lock the position of all the items (toolbars, focus orb, chat window, health bars, etc.) on the screen so they can not be accidentally moved. Better yet modify the interface so that to move something you must hold down the alt or ctrl key while you hover over the item. No more moving things accidentally and no move searching for that magic location where your curser changes when you do want to make a move.
Also fix the UI lock function so the items in the hotbars are actually locked as it states in the description. As it works now I can still move items around the hotbar while the lock is on and even 'overwrite' items in the hotbar.