I wish we did have someone who could light a fire under players. Obviously the McCarthy philosophy that nobody has to, has permeated the entire team. Personally, I think that sucks. You need at least one guy who gives every ounce of energy on every play, who steps up, and challenges others to join him in doing their best. It actually becomes infectious, but something I always said over the years, to get it started, you need one "typhoid Annie type," to make it happen. They infect everyone with their emotions.
We had a coach like that. He left the team. From what I've gathered, from inside sources, he was a little too "effervescent," and someone on the sideline didn't want coaches to be that emotional. I'm talking about Kevin Greene. He got everyone jacked up, and moving. Even those outside of his control. And, think about this, Matthews was always on fire when Kevin was his coach.
A spark plug type on defense would be a linebacker first. Second possibility, a DB. Rarely would it be a DL. On offense, a WR who does magic, or a TE, who has no limits. Rarely is it a QB or RB. If it's an offensive lineman, it's the center, and you see him on players giving them support, after each play. But, as I said, that's rare.
As good as Jordy is, he's not an alpha person. He wouldn't work. I don't have a clue who could do it in GB.