LOL !!!
It's a "good deal" for AA, but disasterous for DAL ?
On the level of pilots worrying about themselves, no one wants to hitch their cart to U if they can help it. I think just as DAL is kicking AA's tires, they're also considering their other options, neither of which is likely to come to fruition.
In fact, I think U would make the best fragmentation carrier to be divvied up between DAL, UAL and AA.