Advanced Stats...

Hello everyone, I have been a member since '09, but rarely post because I never have anything relevant to add to the conversation (but I follow the site avidly). I follow the advanced statistics somewhat and I have had a nagging question in my mind that I have not seen answered by any of the stats yet. I was wondering if a play-making stat could be developed to measure a player's passing ability. The way I have imagined it is to correlate passes to shots or quality chances. If this has already been developed I apologize, but if not I was wondering if someone could do a prototype analysis of one of the Flyers games to see how it would work. Thanks! Edit: I believe this stat would be useful for projections on a players ability regardless of his linemates. For example, Couturier has had poor linemates for the duration of the year, and thus he should not be expected to put up a large amount of assists. This could measure how well he does at setting people up regardless of what they do once he makes a good play.