I think they need to run the 3-4 scheme as a base. Use Jamal Adams as the strong side backer to cover TE’s and be a threat like Polamalu was. That'll put D-Taylor in a more natural position as the weak side edge rusher. Then from there, just have Brooks & Wagner filling in the gaps, and have Blair as the true strong safety. This would also preserve Wagner’s skill set (like how it helped Ray Lewis for so long in Baltimore).
With the depth they have at D-line, they can switch from 3-4 man fronts easily. You got 5 Techs : Nkemdeiche, Collier (which I think fits him best), Alton Robinson, with Ford, Woods, and Mone at nose. Then at edge, you have Dunlap, Mayowa, Hyder, and D-Taylor. Let Amadi play in coverage as a extra safety, and keep Jamal by the line. Stop Blitzing this man, and play him at the nickel. This shyt is not hard, man.
Sherman ain't walking through that door, but even if he did, it wouldn't change anything. The problem is Pete