It's a new tool, and a good one.
But it needs to be used with caution.
Like with all building tools, it's up to the Builder to make sure that everything in the room checks out when using it.
Personally I would be wary of using it in a room with hidden containers or portals, it would most likely screw things up, because the hidden objects would still be in the room, even if the room desc changed. That could cause a problem in some cases, but not in all.
It could for instance work in a flooded area, but most likely not in a city that was turned to rubble.
Anyhow - these things are for the builder to decide - as always.