soo... Yes you should do it then? Assuming you live in some base for one of the "big 4" (and I use that term very loosly these days), then coming to swa will either be a leg up or will get you an interview with the real major(s) at your domicile of choice.

If swa or the big 3 aren't in the city that you currently live or want to live, interview at a major that is.

If you live in a city with no major airline presence or you are unwilling to move, use swa to get an interview at the big 3 airline with the easiest commute. Probably delta.