According to some moderators (Jacob 1) Layering multiple (different) elements will not be possible with console or prop in the next updates. I still don't understand why we can't have this feature (even if some aren't useful) for all elements. Please don't disable this!!!
Also, if you do get rid of this, what will happen to the previously layered stuff in some of my stamps?
List of reasons you would put other elements on top of PSTN: