My dynasty league is instituting IDPs this year. Two IDPs, any position.
Points for IDP's are as follows: 2pts for each sack, interception, safety, blocked punt or field goal, and Fumble recovery. 1 pt for each forced fumble. 6 pts for each touchdown. 1 point for every 2 tackles.
I have found individual rankings but nothing that has a top 100 or top 200. I know that guys like Patrick Willis, Desmond Bishop, James Laurinaitis, and D'Qwell Jackson are 4 good guys but I'm not sure how to compare them against a DE or DB.