I'll play devil's advocate HAL.
a) Hawaiian could be integrated with SW pretty easily. Would it take time? Sure. Look at the acquisition of AirTran. And most likely the HA model of service would change. Staffing more FA's? You really think that would be a problem? Meals? You think that would be a deal breaker for a CEO? The goal for SW would be widebodies with ETOPS immediately. Asia...immediately. A platform for more widebodies with new destinations. It's a jumpstart HAL. Could SW do it alone? Sure. But why not get a turn key Ops for 700 million?
b) Yes, they would adjust the schedule. You think they couldn't change the Hawaiian business model (departure times) and not make money? SW is the PhD of changing schedules to make money. If it doesn't make money, they adapt and change it so it brings in money. I can guarantee you that. Coming Eastbound, how easy would it be for the widebody to land in LA, OAK, or LAS and a 737 to take them to OMA or MCI? Hint..we already have that setup. We (SW) provide the best system of feed in the industry. We operate 3,500 flights a day. Think more widebodies that are full....from 737 feed.
c) Here, I completely agree and you make my point for me. SW wouldn't be buying out a competitor (like AAI), but expanding into long haul, overwater operations. So it's less likely that DAL or AAL would interested. I agree. SW might be.
HAL, I respect your response and appreciate the time you took to post it. But you didn't make any points that wouldn't stop a CEO from making the purchase for the low price that it would take. They don't think like pilots, they look at opportunities for the value presented and then pull the trigger. I highly doubt it would be a disaster for SW if done.
Again, pure speculation on my part and it may never happen. But you have to keep your eyes wide open.