Offsetting the loss of Miller is, in my view, separate from evaluating what Wagner brings to the Rams - he'll be like having a playing coach on the field.
Our D line, with Gaines and Ashawn continuing to improve and settled in as starters, will be monstrous; all that and a couple of healthy proven outside LB/rushers will more than compensate the loss of Von Miller. Add to all that, an improved secondary with Wagner wearing the green dot... Allen has his work cut out for him.
Defense isn't my worry for this game. OLine and unforeseen little things to fix on offense aren't really worries either, at this point, but things I'll eye with concern.
