Updated 7/10/2020:
Physical work on the layout has ground to a halt while we try to help our children move to a new apartment. However, my mind has been active.
I have been contemplating some changes to the track work around the Steubenville PRR station. Market Street will be moved about 6" left (west) as indicated by the black arrows. The green arrows indicate proposed new track, including a passenger siding capable of holding 3-4 passenger cars or head-end cars (baggage, express mail, reefers) and an engine pocket. It might be possible to hold a switcher and a reefer car there (to work with the Armour Packing siding). I'm thinking 6th Street might be extended to intersect with Market.
The jury is still out on making this change, but it looks tempting. Plenty of more pressing work, but...
More when I know it. 
George
