Myles, it does really show the brick detail well!
I can see where you would say the layout is pretty much finished once these two buildings are installed. I suppose you could come up with a new building to replace something near the layout edge if you want.
I don’t know anyone who has sold a layout, though I have heard of it done; and I think it was someone on this forum. I agree, there comes a point to plan to make things easier on our wives and children when the time comes. Not unlike planning a layout that would be easier on us when we aren’t as mobile.