The AI pilots on this forum have been pushing relative seniority. It's gone over like a lead balloon since SWA pilots won't get the pay bump the AI pilots will get and will lose expected internal seniority improvements.
We've been waiting for a huge number of 60+ pilots to retire. 500 may not seem like a lot to some. However, that's 20-25% of the pilots on the seniority list above junior captains. It's enough to upgrade 20% of the SWA FOs.
Also, SWA pilots have been waiting expectantly for ramped up internal growth--which has always come with an improved economy. The internal growth, combined with retirements, would help out every SWA pilot. Alas, the aquisition of Airtran replaces that expected internal growth. There's too much for SWA to focus on and a huge amount of capital sunk into the purchase of AAI. Hence, it's another loss of upward growth for pilots even though it will be good for stockholders and the financial health of the company.