Silgrad Tower from the Ashes

makes sense...
of course, as a Dark Brother, you will only be found out like that if you wear your stuff in public and caught wearing it, or if you commit a crime, then the Morag Tong know you are a Dark Brother for sure...

i think all citzens should flee cause lets face they will think you can fight better if you're in the DB

I like the ideas about reactions to the player, and I think that the faction would need to be much more stealth based...the point to where you should pretty much have to live a double life, wearing normal looking stuff instead of your dark brotherhood armor and weapons around.