Kind of similar to the feature that already exists that allows us to show/hide things like terrain, objects, water, and so on.  It would be nice to be able to highlight or show/hide objects based on their Pickable and Indestructible attributes.  And possibly other object attributes as well.  It would help a lot when designing a large structure and we want to make sure every piece is indestructible or unpickable, or only the right pieces are pickable.