Something to consider ....
According to the US Air NAC, if the MOU passes and the merger becomes reality the only things that will happen right away are pay increases for US Air and the DC going to 14%. Everything else wil happen in time.
The reserve system for the "new" American under PBS would be an item to materialize later rather than sooner. If fact, scheduling for a merged airline under a new PBS system will require some time and some work to materialize.
Long story short, I was told to expect a melded reserve system when the dust settles allowing for biddable long call and short call. Hopes are for a seniority system under PBS for a choice of a 12 hour long call monthly assignment or a window based short call. For some reserve pilots, this may allow them to be long call from home and commute in once notified, if the seniority will allow.
This item is currently and item on the table for negotiators to get to ... some day.