This sounds like a great study, as I too wonder if the SB skill is much more useful than the "Shots Blocked" stat reveals. It could be much more useful because a good shot blocker might alter a player's shots without actually blocking them or a good shot blocker might cause a player to pass up a shot he might otherwise take against a poor shot blocker.
I'll send you my info, but I'm curious if you'll try to adjust for the offensive opponents' abilities as well. For example, I play in D.V. (against bots no less), so very weak competition. I'd think even though my bigs don't have outstanding SB or ID, I'm still holding my opponents to a very low FG% because my opponents are awful. Do you think you'll be able to equalize for it because you'll have a large enough amount of data? My team's info might not be that useful, because my opponents are so weak, but I'd think there are a lot of teams with less drastic examples of opponents being outmatched, but where the data would still be skewed.
Just curious.