Yeah, Airtran had it's most profitable year when it was taken over. The most senior 100 FOs (at 50% relative seniority) that would have upgraded in 2010 are now getting a chance to upgrade 8 years later (and only because of 1000 pilots bypassing). ALL the pilots from AT that could hold captain on the ISL were displaced back to FO, and had to wait up to 3 years before they could bid back to captain. 900-ish pilots were displaced out of ATL. A lot of SWA pilots looked sideways at the AT pilots because they didn't get a 737 rating or interviewed.
Don't get me wrong, I would love to work for SWA, but I can certainly understand if not everyone is ready to let it go.