I would like to see a feature in the ABOUT LAND window, in the OBJECTS menu.
Now as it operates, when you click on the REFRESH NAMES list, it shows all the prims left by everyone who has access to your property.
You can click on RETURN and it goes away. But the problem is that it ALL goes away.
If you gave someone permission to build on your property, those prims go away too making friends very unhappy.
How about a feature that goes something like this?
You choose a name on that objects list, click RETURN, and those prims, and only those prims, are returned. You don't have to go around hunting for those unwanted prims and having to remove each and every one of them.
You keep all the other prims and everyone is happy. And you friends don't have to rebuild their "KEEPER' prims again and again. Makes for a much better relationship with renters, retail spaces, etc.
Now maybe that feature is already present, I haven't found it.