Adding to what everyone else has said, I think we need to look at Littleton wearing the dot.
Littleton's making the calls, but so far he's seemed to have escaped any blame for the D's performance. I think if there's confusion in the defense, like where Peters got burned again, you have to at least question the guy tasked with making the calls.
The defense is full of alpha dogs and I'm not sure that Littleton is the right guy to be making the calls. There was a preseason article about how he's a quiet guy. There was stuff after the Hawks game about how he was letting Mark Barron make the calls and Gurley got on Littleton's ass about making it his defense. In other words, Littleton seems like a guy with beta tendencies trying to keep a bunch of alphas in order - not sure that's a recipe for success.
But yeah, he's a special teams monster, and seems to have some pass rush ability off the edge, so he's definitely a priority-keep. Maybe the Rams should look at getting Barron or someone else the dot.