I have heard a lot of people saying that the lines are going to be a lot better this year. For the DL, I absolutely agree. However is the OL really that much better? Not that it would be that hard to be better than last year's lousy group....but we are keeping a lot from that same group and somehow expecting significant improvement.
Trent Williams - early reports are that he is much more focused this year. Should be an improvement. However, not sure that he is as far along as you would hope a #4 overall pick would be by this point. Hopefully improvement here is significant or even dramatic.
Licht - most people here thought he was not particularly good last year (despite Shanahan's view to the contrary). Any reason we should expect significantly more? Probably some moderate improvement.
Monty - same as Licht, plus he couldn't beat out (in Shanahan's eyes) the consensus worst OL member in years (Casey). I am not advocating bringing back Casey by any means - he sucks - but hard to project a significant upgrade, more like a moderate one.
Chester - the one new addition. I think most people expect good but not great. While he was a backup with the Ravens, that was a backup to a very good line (he did start a lot due to injuries last year, which is good). So good to be optimistic, but hard to think of him as a top 25% of the league kind of guy - probably average would be about right.
Brown - has to be better due to injury. I would guess moderate improvement, with a possibility of significant improvement. But remember his injuries were described as 'chronic', so I don't think we should count on 16 games.
Backups: I know everyone loves to cry out 'Joe Jacoby' when people say that the backups are UDFA or 6/7 rounders. But despite the infrequent Jacoby types, statistically 6/7/UDFA guys just are not very productive or consistent starters. Every time I read a post about Selvish or Capers or whoever, I just mentally replace their name with Hoyer - who got tons of love from fans last year but honestly was just not that good....there is a reason he isn't even on the massive 90-person rosters across the league. I do not see the backups as a relative position of strength or depth at this point.
Overall: So my net is that I would expect moderate improvement overall, with a chance for pretty significant improvement but also a smaller chance (with injury) of minimal improvement. So improvement sure, but from a very crappy starting point. This is fine, but I just get annoyed with the idea that the Redskins are 'investing heavily in the lines' that I hear when in reality it is last year's group plus Chester, who was a backup on the Ravens. For the DL absolutely, but I just don't see it on the OL...