If our line pilots thought this was such a great idea why do they seem so against it?

Why hasn't any other US airline done this?

My thought is that if Southwest isn't doing it they probably have a few good reasons. The public at large is in love with SWA and JB. They can do no wrong in the eyes of the traveling public. Those two airlines don't seem to need to pander to the public for diversity or anything else.

United is 7.04% and SWA is 4%.