You hit the head of the nail.
Prior to the 74 yard TD reception by Eric Decker of Jets in the last game of the season our longest TD's allowed by defense was 48 to Allen Robinson and 49 yards to Megatron.
Other than those 3 big plays the defense forced teams to move it down the field in many plays. The old bend but don't break defense. Nothing wrong with that. But you need to make plays when the other team gets to your red zone. We were not very good at stopping them once we got there. In past years we have been good in red zone defense and the strategy had worked well.
Personally I have no problem with them playing off and NOT giving up the big play. But we just need to get back to being excellent in the red zone. And that will fall mostly on the linebacker play which hasn't been there lately. One downside of the bend but don't break is it can limit the number of opportunities that the offense gets in a game. Those long drives by the opponent can eat up some time. Not a huge problem as long as we hold them to FG's