If the Redskins offensive line improves this season to the point of surprise, many a pundit will have that proverbial egg on their face.That's because right now, most outside observers are not viewing this unit with anything close to sunny-side up optimism.Rotoworld's Evan Silva is the latest to rank the NFL's 32 offensive lines with the Redskins slotted way down the line at 26. No stunner there. Silva stated hisprojections were based on his own notes from the dozen or so games he watches each week; research from Football Outsiders and Pro Football Focus; factoring in"the impact of blocking schemes, rookie expectations, and free agency additions".His evaluation assumes the typical starting lineup with Kory Lichtensteiger at left guard andJammal Brown at right tackle plus rookies Josh LeRibeus and Adam Gettis joining reserves Maurice Hurt, Tyler Polumbus and Erik Cook (not sure why, but tackle Willie Smith, not listed). "Overview: This is another group that could have benefited from continuity that is so vital for zone-blocking teams. Trent Williams (6), Lichtensteiger (11), and Brown (4) combined to miss 21 games due to injury and suspension last season. Though a system fit for the Shanahans' scheme, Chester's game lacks requisite power for right guard. Lichtensteiger, considered a solid starter when healthy, is now coming back from ACL and MCL surgery. Hurt and Cook gained valuable spot-starting experience due to the injuries in front of them, but this year's priority needs simply to be staying healthy. If the Redskins somehow find durability on the line, this could shoot from a bottom-seven unit to the middle of the pack. Robert Griffin III should definitely make it look better."After drafting three lineman and the primary portion of free agency in the books, any improvement figures to come from the current members, though the Lichtensteiger and Brown injury scenarios linger.For comparison's sake, the Eagles (7),Giants (14) and Cowboys (16) all ranked well ahead of the Redskins, though others might quibble on the gap.Of their 2012 non-NFC East opponents, only the Rams (32) finished behind the Redskins while five units ranked among the league's top 10.