Offensive Line as Scoring Attribute ?

[MMeFFLCommish]

Hey everyone, I'm just about to conclude my very first independant league's season. Wanting to be a bit different than the typical yahoo. ESPN, foxsports leagues, I wanted to have a few different things to our league, one being an offensive line as a player/scoring postion. Somewhat pretty simple for the scoring, sliding scales based on points scored, total net yards, and sacks allowed. My question is, are there other leagues out here that use OL's ? Also how do you score them?