I'm open to a lot of ideas at OC.
I like the idea of having former head coaches on the roster. The Steelers were at their best when they had Tomlin, Haley, and Munchak on the staff. There's a lot of value in having multiple coaches with head coach experience.
Kromer is an interesting name just because he's working under an offensive guru. Anyone under McVay, Reid, or Shanahan is worth a look because they know how to run an effective offense for today's NFL. You want to see a coach in here who is going to elevate the talent and get the most out of their players. I'll go as far to say the Steelers had the worst offensive coaching staff in the entire league last season. They didn't utilized their receivers to fit their skill sets. JuJu averaged under 10 yards per reception, Claypool was on the bench in favor of McCloud and Washington, they completely eliminated their own run game, and allowed defenses to easily attack. The short passing game allowed defenders to sit back and wait for the short passes. They didn't even need to rush the QB because they knew the ball was coming out fast. The Steelers have talent. They have good building blocks for the running game. DeCastro is a former All Pro, Dotson was a highly rated run blocking guard (ironically that was his weak point with the Steelers, hmmm...). Obviously you have enough talent outside at receiver and they'll probably keep Ebron for another year and can sign a blocking tight end for a lower cost. This team was putting up nearly 30 points per game early in the season. You get get an intelligent offensive mind into the coaches' room and I think we'll see some dramatic improvements relatively quickly.