I agree with the pick of Ashley and Polina over Mirai in 2014 and don't disagree with not picking Jeremy over Ross in 2011 or Ashley over Karen in 2018. The latter outcomes were sooo predictable.
Ashley vs Karen in 2017 at U.S. Nats was a toss-up; in 2018, Karen deserved to be in fourth behind Angela Wang in the sp (especially if it was so necessary to put the more experienced Ash behind Angela). As well, Jason Brown actually deserved to be in fourth place behind Grant Hochstein in the 2018 sp. That Jason and Karen were put in third place positions over skaters who performed better than them in the sp tells us exactly who U.S. fed was hoping to send to the Games.

In the fp at 2018 U.S. Nats, Karen did not perform as if she was actually prepared and hungry to make the Olympic team. After the fp, U.S. fed threw Karen another bone in their rush to phase-out Ashley Wagner, who skated a decent fp to
La La Land, a program that in retrospect, Ash should have kept and honed throughout the season. But when you are reeling from burnout, self-doubt and mild depression, sh*t happens.
Combined with her overall career accomplishments and name recognition, I think Ashley did enough in the fp to be given better PCS credit and the Swan Song dibs for an Olympic spot. U.S. fed felt differently for a variety of reasons including the fact they had bloomin' Tennell & 3-axel wieldin' Nagasu, plus they were hoping to groom inconsistent but talented K-Chen. The biggest reason for the dis though is that U.S. fed were down on Ash and disinclined to show her a vote of confidence and respect for carrying the U.S. ladies discipline on her back for at least 6 or 7 seasons. But again, alls well that ends well. The darkest hour comes before the glory of the dawn, and all that.
Ashley over Mirai was really Polina over Mirai masquerading as Ashley over Mirai.

Lots of fans and even some coaches disagreed with Mirai being dumped on. At 2014 U.S. Nationals, debatably Mirai should have placed second overall anyway, not third. Mirai was the only one of the top 4 U.S. ladies to stay on her feet in the fp. Alls well that ends well though, as the unfair outcome toughened Mirai's resolve and ultimately culminated in her working with Tom Z. Mirai's crowning glory was in achieving something at the 2018 Olympics that only a handful of international women have ever accomplished. Your U.S. men's reference, I will take to U.S. men's thread.