"empty" map items

It would be nice if the map items (nomad tents, books, etc) that get removed when they contain something were also removed if they were empty, instead of just fading to shadow form.

Helps in two ways - no longer need to keep walking around them as obstacles, and there is no longer any question of which ones you have searched. Once searched they are gone no matter the result.

As it stands, some things vanishing kinda don’t make sense. The empty nomad hut/igloo remains, but the occupied one disappears??

A minor thing, but it would be better if the items always disappeared after searching them (exception - the Shrines).