I think we do merge with Spirit someday, but I don't think it's imminent.
There would be benefits and economies of scale to a merger in addition to them not needing to compete
Regardless, if there was a messy seniority list integration occurring, I don't think it would keep people from applying. They know they would be the bottom of the list no matter what. Why would they care how the integration played out? The bottom is the bottom.