The really fascinating thing is
here.
They did a DVOA update, and the Redskins more than doubled in efficiency from last year. Only the Jaguars benefited more from the new system. Mostly, that change is seen in our rushing offense, which then now have ranked sixth.
All in all, I see very little reason to believe that we aren't an improved team, and furthermore, very little reason to believe that DVOA wouldn't see it that way.