Robert Comsol wrote:
Another thing is how to handle best the unseen areas which I believe contain a wealth of "discovery potential", i.e. should that (unseen) back wall remain blank or instead be covered with medical equipment drawers?
We see the back wall in Lights of Zetar. Kirk and Co. come in from a small hallway that doesn't seem like a main corridor but must be connected to one and cross the room to sit at the desk.
This is what I ended up with from that scene:
It would appear that from the pic you posted, Kirk and Co. are entering the examination room from McCoy's office.