Not sure I can add much to this discussion, but I will submit my observations from an April 2014 visit to the line. Bay Coast is reportedly running on the Delmarva side three days a week and on the Little Creek side the other three. Inbound propane loads seems to be the biggest commodity handled by the Bay Coast, but unfortunately both of the propane transloading facilities are on the extreme north end of the line; one (the largest) at Oak Hall, VA and the other at New Church, VA. These two towns (places more like it) are just across the line from Maryland a few miles south of Pocomoke City.
The train did run one day while I was there, but it only ran from Pocomoke to the fertilizer plant north of Bloxom and tied up there. Obviously the next time a train ran, it was from this point. Not sure which way, but as there were no cars, other than the fertilizer load spotted at the plant, I assume they went back north to Pocomoke. When I came north a couple of days later there were 9 cars at Pocomoke, seven propane loads and two covered hoppers, waiting for the Bay Coast.
Both GP10's, 2000 and 2001 are now derelict at Cape Charles. The 2000 has been in that condition, missing the front truck, for at least 5 years. Both MSR1's are gone from the scene, reportedly scrapped in placed. The GP38 2014 was the power on the train when I saw it in April. The 2000 and 2001 are in sharp paint, one Eastern Shore the other Bay Coast, while the 2014 is in ratty Eastern Shore paint, but it runs! I am assuming the only other unit, GP15 #400 is at Little Creek. With the suspension of barge service I'm not sure why there is a need for a unit and three day a week service on the Norfolk side. I've been down there a couple of times and never noticed any potential shippers there, other than the barge, but there must be something. Anyone know?
Bay Shore Concrete at Cape Charles is very active and takes inbound loads of cement in 70 ton hoppers, easily identifiable. Most of the product goes out by truck, however and some of the cement comes in that way too. I'm guessing it gets switched no more that once a week, or so.
One last thing when visiting Cape Charles....be sure to stop at the museum (if open) as you enter town. It is very interesting and has a great deal of information about both rail and barge service from Cape Charles.