Fun speculation: Should Southwest buy Sun Country?

This topic -- an analyst's speculation on what Southwest would achieve if it bought Sun Country, an airline most PHL fliers have never heard of -- has been around for a week and I've been looking for a good story about it. The best one finally was published this week by the Centre for Asia Pacific  Aviation. The article makes it clear that no one at Southwest or Sun Country, a Minnesota-based leisure carrier that's in Chapter 11 at the moment, was consulted by the analyst, but his rationale sure makes sense to a lot of people.