For the skaters, I would think it depends on the event.
I agree with this. I was thinking mostly of events like Worlds. Mao Asada's goal in Los Angeles in March is to win the World Championship. I do not think she is so much interested in season's bests, whether she got her step sequence up to a level four instead of a level three, or whether the Bulgarian judge gave her 7.50 instead of 7.75 in choreography. (As Michelle Kwan famously said, I don't mind a 5/4 split, as long as the 5 are for me!

)
Joannie Rochette's goal is to make the podium (third place ordinal or higher.)
The two American ladies' goal is to get 6th and 7th, or 5th and 8th, or 4th and 9th. The opportuntity to get feedback from the judges about what they need to work on next year I think is farther down on their list of priorities.
But very reluctantly, I have to agree with you that the judging system ought to be primarily for "Category 5" (skaters, parents and coaches.) I say reluctantly because then we do not have the right to complain, or to be surprised, when Categories one though four gradually lose interest and drift away.
I have been stammering incoherently to put into words just what is missing from the CoP. Then I read Anton Sikharudlize's interview, where he explained it with great clarity.
http://www.goldenskate.com/forum/showthread.php?t=26099
Under 6.0 judging the audience could take part in the process. You knew that 6.0 was perfect, 5.9 was very, very good, and so on. So you could watch a performance pretending to be a judge, and at the end say, Wow, that was super, I'll give a 5.8 for tech and a 5.9 for presentation. If anyone asks you to justify your marks, you could say things like, she landed all her jumps with nice flow

, the split jump into a layback spin at the end was awsome

, and that spiral right on the swell of the music touched my heart.
Then you wait with bated breath to see the scores of the real judges. Yay, the Japanese judge agreed with me! Boo, the Italian judge only gave her a 5.6. Oh no, the Russian judge placed her below the other girl!
Under the CoP all you can do is sit there dumbly until somebody tells you that the total score is 117.96, that she got an edge call on her Lutz which cost one point, and she spun only seven revolutions instead of 8 on her change camel spin.
OK, if you say so. What's on the other channels?