Stapling is bad juju and bad karma in ALPA's book by the way.
Don, the problem is that it's not an ALPA issue. Southwest management already made a deal with Delta without following the requirements of our CBA to negotiate a way for our pilots to go with the planes. Delta management had a reasonable expectation that Southwest was bargaining in good faith and complying with all of its legal obligations. Delta isn't responsible for our CBA, because they aren't a party to it. Therefore, they have a deal in place to take the airplanes without the pilots. That means that our grievance is with Southwest, not with Delta. If Delta doesn't want to take the pilots, they don't have to. Southwest (or ALPA) would have to go, hat in hand, to Delta to try to get our pilots positions. Failing that, Southwest would be on the hook for whatever penalty an arbitrator awarded for violating our fragmentation protections. Trying to force Delta into an arbitrated seniority integration won't work. They're under no obligation to do so.