more of an observation, but when removing a display, the data associated with the ID index is not restored.
mining a smart display and replacing does not reduce ID count by 1 (or return it's index for use later when placing a new display). placing down a display and mining then can cause gaps in ID values for smart display. IE: every time a display is placed the smart display # is incremented, but when mined, that ID is not cleared for use.
memory waste is of course minimal for something like this, but what you'd want to do, ideally, is set a function for, say, whena display is mined, set smart display index[x] to nil. when one is placed, choose the first index that is nil, and give that display that ID number. something like that.
