One thing which this (and a lot of boarding systems) ignore is that high-revenue customers for airlines demand preferential treatment If I'm a frequent flyer,

One thing which this (and a lot of boarding systems) ignore is that high-revenue customers for airlines demand preferential treatment If I'm a frequent flyer, regardless of whether i'm sitting in coach or first class, i'm going to expect to be seated first so I don't have to wait in line and can be sure I get a space in the overhead bin. Airlines (like southwest) who don't provide this lose out on business travelers who book last minute, full-fare tickets -- and major carriers who rely on this revenue will be reluctant to switch to systems which don't account for this.