Edge rusher as a position
Instead of just DE, DL, DT or LB designations, yahoo should distinguish between LB, Edge rushers (LB/DE) and interior lineman
Mat Irby commented
It's a problem that EDGE players like Khalil Mack or T.J. Watt are sometimes listed as DL and otherwise as LB, because their valuation swings dramatically depending on which position they are arbitrarily assigned by their team. This is particularly an issue when changes like to this designation occur from season to season in keeper or dynasty formats where users depend on players to maintain consistent values. The best fix is to label these types of players as EDGE players permanently, but perhaps the easiest fix from a programming standpoint would be to just allow such players to maintain dual DE/LB eligibility forever regardless of how their teams list them in the program or player guide.
Nicolas poulin commented
Outside linebackers often have stats similar to defensive line players (ex: Von Miller, Khalil Mack). An edge position that unites with defensive linemen would make it easier to utilize talented players who are sulky at the linebacker position due to their lack of stability.