Offensive tackle is discussed as a need quite often by Bills fans. Cordy Glenn is locked in at left tackle, but veteran Erik Pears is a subpar starter on the right side, and the only conceivably on-roster competition for him, Chris Hairston, missed the entire 2013 season with an undisclosed medical condition and still has not been cleared to return to team activities. A starting right tackle would be nice, as would better depth.
Defensive end is not discussed nearly as often, mostly because between Mario Williams and Jerry Hughes, the Bills have 23 sacks worth of production at the position. Williams is obviously a mainstay at the position, but Hughes is best served in a situational pass rush role, and the only run-down complement worth noting is the recently signed Jarius Wynn, who is a role player. Buffalo has little to no depth behind these players as they switch back to a 4-3 system under new coordinator Jim Schwartz.
Buffalo obviously has other needs, but these two rank at or near the top of most lists simply because the team does not have a sufficient number of bodies in these areas, let alone enough players that can be counted on as quality every-down contributors. Which do you consider the bigger need, Bills fans?