Catman---I have noticed in a couple of your post, that you keep referring to the boarding procedure of Southwest.
Have you ever flown Southwest?

My experience has been that their boarding procedure is more orderly than American or Delta. You are given a colored plastic boarding card, and board in groups of 30. Boarding cards 1-30 may be red, 31-60 green, and so forth. Unless the gate agent is colored blind, it is hard to board out of order.

I agree their boarding areas and planes are crowded. Like all airlines, they try to fill every seat.