I would also love a "lock furnishing" in edit mode. Most of the times, when 2 furnishings are next to each other and I want to move the smaller furnishing, it would take like 10+ attempts and many camera angle adjustments to be able to click on the correct item...because the bigger thing always get clicked first even when my mouse cursor is well away from it. If we can lock specific stuff and disable the ability to click/move it, we will have a much better time when editing furnishings.