I don't even think that would be possible. SWA runs such lean manning already (less than 12 per aircraft and 8% reserves). Common season to season fluctuations already create nearly impossible manning situations. Couple that with the amount of the schedule routinely dumped into open time and a 10% reduction would most likely be impossible even after removing most known absence conflicts. All that being said, I don't think the SWA pilots would ever be persuaded to consider pref bid short of it being imposed through bankruptcy or some type of force majeure. SWA pilots remain very content with the ability to easily turn a week of vacation into 3 weeks off.