There are ways to structure an integration that would mitigate your concerns. In any case, a single group is always preferable to three disparate groups bidding against each other. As a former member of the Red Tail whipsaw, I speak from experience.In this case, the lesser of the evils is to combat the whipsaw in future contracts and stay separate. In this case, it would be far more ugly to try and merge the groups because of massive displacements and WA and NApilots would end up on the street. Think about it, 20 some airplanes will probably be leaving ATA and you want to have those pilots to displace pilots at World and North American?
At World, the consensus seems to be that most of us are against integration.....and for good reason.
Not to mention that WO and NA are Teamsters and ATA is ALPA. It would surely be too much of a mess.