Don't think for one second that I am an advocate of closing MCIE because I'm not. However, it seems that no one has considered the possibility that AMR might close the facility, but continue to pay the rent just to prevent someone else from moving in there. Just in case, they might need the maintenance space in the future. Say, for instance, if another major like UAL, DL, NWA, or the new US Airways did not survive the near future.
I've seen UAL's flight attendant training facility at ORD. If their maintenance facilities are of the same quality then, trust me, AA does not want them.