Yes, my thanks also for this very good discussion. it was timely for me!

Per request of the Store, Cornucopia3d had asked me for some stone walkways for their Garden theme this month. In reading this thread, it made me conscious of the need to always include a "terrain mesh" to go along with such a product.

It turns out to be somewhat tricky to get a stable pierced terrain mesh for something like 70-plus irregularly shaped stones in a walkway, but it's worth the modelling effort.