The way I see it, this place needs to look like a functioning bank of a worlds capital. not a place where you walk up yell bank and sit there. I have placed bank tellers on the south wall windows for window side banking. stationary NPC's occupy most of the space/chairs simulating active bankers. And seriously, this is Britain... where are the guards? well now they guard the front door, and the entrance to the treasure room. I would like it so that the door to the treasure room can only be opened by invisible players, who can then enter to open the chest on the table, a khaldun style puzzle box. also note the privacy curtains, bookshelves to keep records and documents, and the banners showing the silver serpent of our absent king. Don't forget the scales, coins in those days oft did vary in size and value.
