What is missing from your prescription is who provides the ILB blitzer? Tedy Bruschi, in his prime, brought the all-time NCAA sack record to his position as ILB. That GENUINE, FEARED threat, made it possible that any of three different LBs would be blitzing. As Tedy has aged, that blitzing unpredictability has waned. Now the Offense only has to worry about only two, not three alternative blitzing LBs.
The best ILB blitzer I have seen in a long time, that has any size, is 245# Lauranitis. His college sack totals show enormous production from that tight, restricted position. The distance is shorter to the QB, but crowded with bodies. Tedy was a DT sometimes in college; and could operate in that tight area, effectively most can't. So you can't just shuffle an OLB blitzer inside, it doesn't work. I was hoping Sintim would fit, but the more I see, he just doesn't look quick enough for the ILB role, or the ILB blitzing role.
Box thinks a two down run-stuffer is what is needed, a duplicate Ted Johnson, so do you apparently; I disgree vehemently.
I want that, PLUS I want, and BB's Defenses need even more, an ILB blitzing capacity. Tedy provided that, TJ didn't need it, and Mayo just does not. Mayo is fine ILB, but neither his performance with the Pats, nor his college production, indicates that ILB blitzing is his forte`. So the other guy must have it. And a pure Ted Johnson type does not provide it; as Tedy did the duty.
Since there are no super safeties in this draft, shutting down the pass by LBs would help. Guyton can certainly assist there. It plays to his talent. But he looks to be a 3rd down ILB; who covers the middle on 1st and 2nd down? A two down run-stuffer, a duplicate TJ, certainly would not, either. Once again, that was a capability that Tedy provided, instead. Mayo is somewhat facile in that capacity, but he is not a Tedy Bruschi in his prime, in pass coverage. OTOH, Mayo is a better run-stuffer, than Tedy ever was.