Just as a guess...and this is one of the reasons I said earlier we'd wait until closer to spring ball before we'd put a chart up.
I can see this defense looking a lot like ours did in 2008. Substitute Lester for RoMac and we have our "play-caller" in the secondary.
The calls from the LB corps bear watching. While I would think Nico moves into DH's slot as to calling sets, I also think it's important to note that DePriest was running behind DH all season. He understands, or at least is beginning to, how our defense operates.