I would like the objects, walls and floors of the lower levels aparecan not at other levels. It would be very functional if only a slight shadow is observed to have them as a guide. The idea is that you can not select, this is to have better control of what is being done.
I think it can work for some, so it would be nice to include an option for those who want to see objects at other levels.
Attached is a short video to better describe my proposal.