While I agree with most of your post, if your option was one program that gave you 11 miles per $, while another gave you 22 miles per $, would that persuade you? Because with what I outlined in my previous post, that is effectively what GS is today if you use it right. That plus the MM companion benefit keeps me solidly with UA.
I find Y saver availability to be pretty plentiful vs business, so that is another part of the equation when combined with PN. I completely agree that UA in Y on the configurations they have and are moving to are an absolute embarrassment, and I would totally be with DL on that point.