your last phrase is what throws the whole deal out the window.... AA isn't desperate enough to get back in the spotlight via US.
BK is designed to allow AMR to restructure on its own; they have the tools to do what they need to do to turn the company around and the law gives THEM the advantage - exclusivity.
If January rolls around and AA has made no signs of cleaning itself up, then we can return to your discussion.... but I can assure you that if the creditors have to start looking for someone to buy out AMR, they will look high and wide - and LCC will have to compete on the basis of the business proposal it can make - including cash out of its own bank accounts and stock from its own treasury... against other investors/companies who will be expected to do the same thing.
There is no such thing as a "company is married" and therefore ineligible for any further marriages or asset acquisitions. ANY airline could conceivably buy AMR subject to antitrust regulations that would prevent a merger... and on that note, you might want to remember that the DOJ was very close to blocking the slot deal because US now controls more than 50% of the slots at DCA... unless US is willing to walk away from AA's DCA slots and fly AA's schedule with the slots US already has, there will be no merging of AA-US operations at DCA, just as there can be no merger or asset acquisition involving DL and AA at LGA... and probably none involving AA or UA at ORD... other than those pretty obvious overlaps, most every other combination is on the table.... if it comes down to asset acquisitions or mergers....
but the OVERWHELMING evidence is that AA will be able to successfully restructure and re-emerge on its own.
Yes, US would know that too. Doug has gone on record that is looking to merge, what better partner than a major that has just cleaned up its books. Heck, I would bet Doug would be willing to spend off the troubled East to get AA...........I don't want this to happen, but after seeing how close he came to getting Delta, I would not bet against him.