For the sake of argument (I'm playing Devil's Advocate here since you're asking for feedback) let's say I'm selling a lot of 150 figures. I have my C- chart with me. C10 - perfect condition, C9 - minor wear, all joints tight, C8 - some wear, maybe one loose joint etc..
So I look each figure over, give it a shake to check for loose joints. I take an average of 20 seconds per figure. We're looking at an hour of grading - not very long at all.
Suppose I want to examine your 7 criteria AND select a value from 1-5 for each part. It's going to take almost 7 times as long to grade my lot. Almost 6 hours!!! If I'm a lazy sod (because the non-lazy people will know how to use the C-grade properly) I'm not going to be spending 6 hours grading a lot of toys that I just want to get rid of.
Just some feedback. :thumbsup: