I think SWA's days of unprecedented financial success and fantastical pilot wages are coming to an end. Look at what they get paid. Look at fuel prices and the expiration of their fuel hedges. Look at the saturation in the U.S. domestic airline market.
They are going to have to change their business model... i.e. larger aircraft and international routes if they want to maintain their profitability. They are looking into it with 787's, but it is going to be a tough transition. However, their management may just be sharp enough to pull it off.