KillerkongPro Suggestion: being able to lock the new 1.4 item signs Reason: To make it a certain sign, you need to put in one of the object (when you place the item sign and right click it, you lose one of the items you have equipped). and if someone breaks it, they could get something worth of value like a record or minerals like emerald.
Item frames are entities. They are deleted when someone tries to reduce lag. Only blocks can be LWC'd there is nothing anyone but Mojang can do about it.