>This sounds reasonable to me - assuming of course, the PCA components each have meaningful interpretations, and measure the degree of "good". But they won't,

>This sounds reasonable to me - assuming of course, the PCA components each have meaningful interpretations, and measure the degree of "good". But they won't, unless it happens to project near one of your dimensions. If the 7 components can only be understood as linear combinations of 60 factors, your experts still need to provide 60 scores.