Being able to blindfold people when they're restrained, so they can't see where you're taking them or what's going on in the room.
For instance, it's easy to picture being sonic'd, hooded, grappled and carried off to the sewers while your attacker knows that even if you scream for help on SIC, you can't describe where you're being taken. In that sense, I feel like this would be another buff to combat characters.
I just don't think this is needed. There's multiple ways to restrain, subdue, and otherwise disguise yourself in game as it stands now along with places and vehicles designed for this very purpose.