I think that the reason people want to know is not that they are looking to be graded, (they already have,) but that they would like to know how to do better. T

I think that the reason people want to know is not that they are looking to be graded, (they already have,) but that they would like to know how to do better. They want to improve their chances of getting in next round or succeeding while going solo. It seems to me that a "why I wasn't excepted" would be the first piece of advice I'd get from YC.