Thought I'd post this since some have argued in this thread (as well as the one announcing placements and then the main competition thread) that they feel like Nationals isn't even necessary if not everyone is really in consideration, even if they place well.
This is from Sean Rabbitt, who obviously wasn't 'a factor' in the sense of anyone with real probability to make any of the Oly/Worlds/4CC teams and I think it says exactly why Nationals IS relevant, even if it's not a sole determining factor for positions like some here feel is should be.
seanrabbitt“Never in history has anyone enjoyed nationals more than Sean Rabbitt.” - @johnnygweir And @taralipinski
「日本語下

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I spend a year planning, training, dieting, and studying, pushing myself to my limits for it all to come down to a measly 8min in total. This year specifically, I faced more challenges than before; changing my long program and my short program, battling 2 hip injuries and so after all the hard work is done, when I get out to center ice and that music starts, I hope it was all worth it. Ithink about my character, telling the story I have spent the last year perfecting. As I get into the character the jumps and spins I have ever so tirelessly worked on fall right into place, just as planned, just as practiced. The crowd goes wild, and everyone says to me after “you look like you’re having so much fun” well my friends, it’s because I am having fun, and have a lot to be happy for. This to me is a win, this to me is my nationals gold medal.
Thank you San Jose for making the 2018 US Championships such a memorable experience. I skated the most perfect short program of my life and a long program that was nothing short of fantastic. It has been a long and difficult season with many high points as well as many low points. I can proudly say this week was a success and am coming home proud of my accomplishment! Now time for a nap!
https://www.instagram.com/p/Bdtbq8jBwQH/?hl=en&taken-by=seanrabbitt