A couple quick additional comments-
On the section for what to look for in ratings, you say that Speed doesn't matter AT ALL for bigs to score. I'm not sure this is really true. I've seen many PFs who have benefited from high speed and just avg ath (think like 50ath, 60 spd). I think it's less important than ATH but it still matters.
Also, maybe you could add a section for SFs. You cover guards and bigs but SF is a little unique and can be used in a variety of ways.
Personally, I'd steal gil's advice of going for 2 out of 3 things for a guards/bigs and 3 out of 4 for SFs. His idea was guards should be able to do 2 out of 3 things well - defense, scoring, ball skills. Bigs is defense, reb, scoring. SF is defense, reb, scoring, ball skills. (I think that was it).