Would you prefer to see the Leccy pilots being made redundant than to be retrained on the ATP?
Put yourself in the shoes of the ATP FO's that want to be upgraded. Would you prefer it if the Leccy pilots get the sack and you get the upgrade. Or would it be better if Mr Leccy Skipper gets transferred and you have to listen to him going on about the good old days of Liege, whilst he can still barely afford to pay his rent. I think a lot of FO's WOULD deeply resent you, if you transferred.
The good news is that it's not the ATP, guys that decide who goes when the time comes, but management. Oh no, that isn't good news at all!
BTW I work for a large operation that does a far better job of keeping it's employees informed than AA did. They want us to be motivated and part of the success of the business, not bitter and alienated. Our management do it, not because they are nice but because it is good business sense to do so.