Von Miller and Khalil Mack
Von Miller and Khalil Mack do not play LB with their new teams, which is the designation Yahoo has (arbitrarily and lazily) assigned. They now play DE in 4-3 schemes. For reference, please see the depth charts as listed by both Ourlads and Pro Football Focus. Please give Von Miller and Khalil Mack dual eligibility, or, at least, transfer their designation to DE. It makes a huge difference on their fantasy impact if they are listed incorrectly.
Mat Irby commented
For that matter, this is a huge flaw in Yahoo IDP in general. Edge players should be designated as DE/LB, because when a player leaves a team where he is acting as a DE and becomes a 3-4 LB, he loses almost all value, and vice/versa. This is incredibly problematic in dynasty settings. It should be Yahoo's aim to create consistency in the value of these players across the board, year-over-year.