Assuming we do make the playoffs, here are my thoughts:
It's no secret that we're not the best team in the league. I'd argue that there is a whole tier of teams better than us right now. Now that's not necessarily the end of the world, lesser teams win championships all the time. But let's think about HOW teams beat seemingly better teams in the playoffs.
Name any sport, and the way you beat better teams is by having one player get really hot in the playoffs and take over single handedly. It could be a starting pitcher, a goalie, or a QB like it was with Eli in the 2007 playoffs. The problem for us is that it can't be Eli this year because the offense is already playing about as well as it possibly can!
What we need is something to ignite the defense. And at this point, I really have no idea what that could possibly be.