AA has to be very careful that in going after half of their revenue represented by once a year fliers they don't risk losing the other half represented by their loyal frequent flier base, which they've tried so hard to protect and expand, and which they view as on of their strongest competitive advantages. At least it would be my hope that they understand it. It makes no sense to poach fliers from UA and DL only to stick it to them later. But I'm not the one making decisions...