As for lower- level... You ask great questions, something to ponder, even theoretically. I don't think it can be only top- level seniors who have a divided panel, that's just unfair. Perhaps starting with Regionals and Juniors? And everything before- have "bullet points" that all judges are qualified to give? Also, I don't want to be insulting to judges. There's Inman, for example- it is my understanding he has training in arts. I am sure there are LOTS of current judges who can easily do both. The trick is- with 6.0, "artistic second mark" system it was more of a general impression/ perfection of execution. I might like one skater, the judges another. But with the current system, things are spelled out in professionally artistic terms, so not following them becomes blatantly obvious to members of said professions.
Definition: The personal and creative translation of the music to movement on ice.
To reward the skater who through movement creates a personal and creative translation of the music.
As the tempo binds all notes in time, the ability to use the tempos and rhythms of the music in a variety
of ways, along with the subtle use of finesse to reflect the nuances of all the fundamentals of music:
melody, rhythm, harmony, color, texture, and form creates a mastery of interpretation.
Can one - especially without musical training- really judge "the subtle use of finesse to reflect the nuances of all ( ALL!!! LOL) fundamentals of music", especially while judging everything else? Absolutely not. And as a result we have Kozuka and Suzuki undermarked on IN, Lipnitskaya overmarked on IN. Etc. If it had not been spelled out so very specifically in musical terms, I would not be boring everybody with constant wailing. But once it is spelled out, ISU has to live up to it one way or another, or judging PCS feels fake.