I'd prefer an offensive HC for continuity reasons, but now that we don't have one, I'm not expecting an OC to step in and blow the league away. It'll be a retread or a new guy who will get a few years to earn his chops before being poached (best case scenario - he's that good to risk being hired away for HC).
With Fields' potential and new skill players yet to be drafted & brought in + better OL (likely, given Poles' background & focus), the O should be plenty capable of actually winning games & not a liability for once. Probably not "explosive", but adequate and light years better than the "offensive" dogshit clown show Nagy spewed. Better by comparison, but also likely to be good enough to compete & into playoffs, esp. if D is top 10 & gets turnovers again (a focus of Eber)