Zero duty (straight up on the center) and also quick step into gaps and rush...and / or 1 that can play anywhere even on the 'end'...then you can switch shiznit, gap assignments, up.
If you can switch up gap assignments in a prescribed manner, then you can blitz an olb through any gap....on any down...
If you can run / pass rush an lb ...through any gap... on any down without loosing any integrity vs runs, then you can wreck shit.
We had defensively awesome rotations in the 80s too
You need a bunch of em.
Additionally, you've got a cool system that can do a variety of things up there, this isn't line up and play draw it up in the dirt stuff.
Ergo, you can use both variety in front 3 and multiply skilled unit players.
If you can switch up gap assignments in a prescribed manner, then you can blitz an olb through any gap....on any down...
If you can run / pass rush an lb ...through any gap... on any down without loosing any integrity vs runs, then you can wreck shit.