Why overhaul the MBB's for Greenfield? With the pending Rotem order due to replace the Bombardier cars that are in MUCH better shape, I would think they would go that route. Greenfield-Springfield is a short enough distance that the lack of restrooms is not really a issue. If it is, they could always add a bathroom to the cab cars to ensure one is on each train.
Hoping for a rebirth of the Screamer fleet.