Would you consider exposing the z-index (layer number) of elements as an inport? There are occasions when it would be very handy if we could, for example, move the object being dragged to the top of the heap. (e.g., in a presentation with a deck of cards, allowing the user to pick a card and have it move to the top.) I realize that we can use StampBackground and Deactivate with other objects, but sometimes that's not enough. Personally, the 3DScene would be the most helpful object to start with.
Thanks for considering!