Hardly irrelevant. No carrier wants to do this. It is all downsides with no upsides.

As has been the case with other significant policy changes, when one of the legacies does something, the others follow sooner or later because there is no place to jump. Although it remains to be seen what DL will do.

If UA wanted this to happen, AERO would handle it or SHARES would have been reprogrammed ages ago.