In the 4-3-4 Our linebackers will be suspect, in the 4-2-5 our corners will be. Randall Evans was honestly better than Chapman 50% of the time and better than Nigel in run support 95% of the time. Our weak side corner is going to be questionable (kip Daily maybe??) When we throw a 3rd out there (4-2-5) we might be in trouble.
I can see Tre moving back to MLB if nobody else pans out for that position and get some quicker guys outside to set the edges to minimize the damage of our DE and CB's being the weak-spots in our defense.