You're right about the flat number / street number situation though. It might be good to add that to the SSID as well.
Loud music seems like a perfect use case for the information.
No one ever showed up at my door or anything, but it was there. Seems like the most obvious and succinct way to tie the access point to a physical location, which seems the most obvious way to open communications.
I think it'll need to hit a critical mass before it's useful. People don't expect SSID's to have useful information so they don't look for it there.