I think much has changed since Eagle was last for sale. AMR ran their grand experiment using Cape Air in little 402's out in STL on an interline agreement. More recently they formed an interline agreement with JetBlue, and even gave away some AMR Eagle flying, slots, and routes in the process.... So we have large plane operators flying what were AMR routes providing feed... now the precedent has been made and nobody said boo....
I expect Eagle to be spun off to existing AMR shareholders with AMR retaining 49% interest, but no longer owned. Shortly thereafter, their fee for departure contract will be cancelled, and they will begin flying the exact same feed flying on an interline agreement. As a non AMR owned, non-subcontractor, the scope clauses will no longer apply, and Eagle will begin accepting deliveries of larger jets... E190's... why bother... they'll probably get a stack of 73's.
This would allow AMR to continue their long stated agenda of making Eagle the domestic carrier, and making AA the long haul, transcon & international airline. Once the dust settles, AMR will buy back the outstanding 51% interest from it's shareholders.