I recommend you keep that enchantment a thing on this particular map. It's your creation and I won't police your having it - I understand that your intent was and is good, in this regard, particularly when you were looking for your friend and Sirius' brother. I just think, maybe, it shouldn't be something I should have anything to do with. If that makes sense.
The list, on the other hand. I'd be eternally grateful for. Even if it might not stop me doing an occasional check in with everyone. Sometimes it's just good to be noticed and be able to say something you might not otherwise have been brave enough to.