Tail Rota, you post this message as if you have never before received a letter from AAR. You see, when I read it, all I can see is:"blah, blah,blah,blah, specific circumstances, blah, blah, blah, blah.
You seem to forget that a Transition Upgrade policy is already in place - all an FO has to to is spend 1 year+ on the Boeing after first having spent 3 years on the Airbus!
Don't hold your breath, the FCN will just be a rewording of AAR's Christmas letter where accelerated guys formally will be given the clearance to jump ahead of the rest. Of course, they will also give this to a couple of exceptionally qualified FOs that don't have the accelerated hours - you know, so that "nobody will be disadvantaged"