Peter, I believe I understand what you are attempting to achieve. I will try to borrow someone's digital camera to take some photos of what I am doing. Suffice to say my post office building is over 7 feet long. Another building near it emulates a department store with revolving doors and window displays and a blue background with gold letters sign "GIMBEL'S." It has a good sized portico over the entranceway.
I have a number of building fronts that will be used to make a MACY'S store of about 4 x 4 foot that will be 7 or 8 stories high. The 4 foot depth is all I have room for. A friend of mine makes the fronts and I sell them for him at York and a few 2 rail shows.
So, a question could be "how can you integrate trains in with larger buildings like these?" Easy. The trains run underneath the buildings just as they do in New York city.
