So I made a rough map, not knowing exactly where the Salem Crossovers might be (the VGN and NW are parallel for more than 3 miles and connect at several points, offering many points you might call a crossover)
But I think we can conclude that, as far as rail goes, a new VGN stop is the end of the line.
1) VA is only buying as much of the VGN as is needed to get to Bburg/Cburg,
and not to "connect westward"
2) Going onward to Bristol BY RAIL
would probably require a new stretch of rail between "Slate Branch" (along which the VGN runs) and "Crab Creek" (along which NW runs)
3) I cant find any "old leg on a wye" or any other indicators that the VGN ever aspired to go southwest from Merrimac.
NRV has always been where "rail stops making sense" for passenger service:
- Crescent Corridor capacity is better devoted to freight
- I-81 is a fast and free flowing right of way for bus
- Demand should be proven by bus
- Either Blacksburg or Roanoke would make a fine bus hub