I was looking through the scoring and settings for the league and noticed that you will lose 2 points for every time that your quarterback is sacked. Did you guys use those settings last year? That seems a little high to me. If your QB is sacked 4 or 5 times you can lose a lot of points. The Yahoo default is 0, although some leagues use - 1 points per sack.
As far as the the individual defensive players go, shouldn't interceptions be a lot more? In our league, an interception is worth just one more point than a tackle. Sacks are just three points as well. When choosing defensive backs, it really doesn't make much sense to go with a Cornerback when the Safety position will record a lot more tackles than a CB.
I haven't played with IDP's before and will try anything, I just wanted to know what the deal is with scoring.