There were some late signings in the league. One that interested me was Eric Decker signing in New England.
I think we could have used the 31 year old receiver as a bridge player for 2018, insurance against the necessary development time for a Trey Quinn or Robert Davis and/or the re-emergence of Jamison Crowder, etc.
Decker would also have been a good guy to have to run those shallow routes on third down to pick up that first down yardage.
In regards to the defensive line, I think with Tim Settle and Daron Payne DT should be covered unless there is massive attrition due to injuries.
To me the DL is one of the reasons to be the most optimistic about this team being better than the 2015-17 clubs.
We finally have a front seven that has the talent in place to stop people.
Gruden may know how to organize a passing offense and Cousins was efficient at being the game manager and put up good stats, but ultimately the Redskins couldn't beat the good teams on the schedule very often and the reason was usually the poor defense.
Which in turn caused Cousins to have to step out of his comfort zone and try to be a player he is not, which is a down the field play-maker running off improvisation.