Mark - nice aerial view of the layout. I've been trying to learn about switching yards, as up this this point I was really not interested in switching. With your run around, you could lead a switcher into the double industry area at the "bottom", back the freight cars into the runaround, uncouple and run the switcher to the other side and then push the cars into the industry track. If you do not do that you would be forced to always having the switcher pushing into that area.
I take it you extended the upper section of track around the curve and under your station? Of course then you could make another bridge to connect the lower track into a loop. I've always considered my SCARM layouts a suggested plan, subject to change as I am laying in track. I just did that with the TP build connecting the two tracks on the incline together and at the bottom to be able to lead in with an engine, run around and push into the yard.
