As much as I want to see improvement, I have a hard time looking at the raw numbers and being encouraged- the health needs to improve and we need to see production.
Looking at the defensive splits is fairly disheartening-
http://www.pro-football-reference.com/teams/chi/2016_opp_splits.htm
What you can see is 674 plays ran by the opposition where they were leading or tied- and rushing YPA is in the 4.5 range in that situation.
Passing wise, in the same game situation, the bears are in the high 90's for passer rating given up- and that is with the bears at 22nd in pass attempts against. 2/3rds of the ints came when the opposition was up by over 1 score with a high win probability.
All of that paints a picture of a defense that was unable to get off the field when their team was behind.
With the injuries and dismal offensive output this year, I am just as mystified as to what this defense is now as I was in september.
At least last year we had a lot more competative games that showed us that the defense could hold in a tight spot at times.
A defense that can occasionally makes stops when the other team is going 3 runs and punt or two runs pass and punt to eat the clock and end the game does not really teach us a lot.
Hopefully the injury situation is better next year and hopefully the 2015 improvement carries over.
As for this year, All I can grade them is incomplete/not enough relevant data.