As I said, this was speculation. In reality it would be impossible. How for example could Dormanstown send vehicles and staff to cover the Darlington boards and vice versa. The dead mileage would surely out weigh the cost. Then there are the space implications to think about as well as covering for breakdowns. The list goes on.
The idea of giving some of the fleet a face-lift is a good one though. Depends though on what will be regarded as a face-lift?:I doubt, in the current climate that it will be internal even though a few vehicles would benefit from it.
RE: Redcar depot