What practical uses would hiding in places that block sight, or even the ones that don’t, have for players? You couldn’t really use it to get away from monsters following you could you? I mean if they’re agroed to you when you get in they’ll just run up to the last place they saw you and find you trapped wouldn’t they? Even if you lose line of sight they can still use your sent to find you.
Now if this is mainly for monsters to use it would make a lot more sense. Clearing a house just to be surprised by a child zombie popping out of a dryer or something like that does sound like a very interesting new challenge.