Keys for shared access are coming, though I don't know when. You'll be able to give (and revoke) permission for the players you choose to enter your home even when you aren't online.
How bout with Bureaucratic Arts II you can create guest lists that you insert your friends names into them and then can 'activate' them. Activating them can allow anyone who is on it 24/7 access. You should still have the notes after you activate them but they should just be a different color like red. Then you should be able to deactivate it whenever or adjust whomever is on it.