Next month, Southwest Airlines will test assigned seating on some of its flights out of San Diego. If assigned seats are adopted, this would be a huge change for the carrier, which has always forced customers into a cattle call without a seat assignment. Assuming the change doesn’t add additional time to boarding, Southwest would consider rolling it out. Many passengers hate not having assigned seats, though Southwest had been oddly hard-headed about even considering assigned seats. Glad to see they’re having a change of heart.