Hi Steve,
I've been watching, but was holding off on replying since my division is the one where substitutions are allowed, and also, Concorde has a very limited scope in the Sched Div as it only really applies to the Classic airlines at this point.
from what I am seeing, it does seem like the guidelines are being pushed, but I'm not sure what the policy/procedures are around that, and where things go from there.
Sorry I couldn't be more help, but like I said, the question pretty much falls outside my division.
Alan