If possible, I'd like to see the bell in Serena Tower keep track of who rings it. There's an Auxiliary posted right there to observe those who come and go, so I think it'd make sense and aid a lot in finding people who rang for a talk.
I believe it used to do this in Chapter 1. It's a great idea for IC and OOC reasons.
Perhaps the explanation of knowing who it is that is ringing, could be linked to their possession (or not) of a Sanctuary Ring.