You make a lot of fair points, which is why I gave less weight to my Fear ranking than the other performances. I think it's probably not a very reliable indicator of their overall performance abilities.

I think DWC and Thanks are among Seventeen's best performance pieces, but I still wouldn't say they use a lot of facial expressions (what I meant was "don't use (facial) expressions") for the performances, especially in comparison to their other concepts. I think how you express the song through your dancing is a far better indicator of performance with DWC and Thanks, but that leans into dance technique territory and I'm unqualified to judge that.

I can definitely see an argument that my rating system doesn't work with a performance like Fear. That's usually why I try to stick to rating brighter concepts, because I feel like my criteria better applies to those concepts (ex. I feel like my criteria for grading works for Oh My!, Left and Right, BOOMBOOM, and even Home;Run to an extent). My judging criteria definitely doesn't work for all concepts, though, which is why I try to go for a certain balance of stages.