Yeah, I think he could still be really, really good.
But I'm also thrilled that just about all the coaches talked about as HC candidates are defensive coaches. I don't know who they chase if Ben Johnson doesn't go there, and popular opinion is that he most cares about non-meddling ownership and smooth front office collaboration making the Bears not a match.
I'm not sure what other offensive minds you'd grab. Bobby Slowik was a hot name last year, but I'm not sure after this year. Also, if he's a Kyle Shanahan guy, he's absolutely not a fit for Caleb Williams. Shanahan's system calls for strictly a pocket passing game-manager who will call the plays exactly as drawn up. That takes away about 70% of what makes Williams an exciting prospect.
If the Browns were to fire Kevin Stefanski, that would probably be an awesome fit, but fortunately, Stefanski just signed an extension and the Browns are notorious for not eating salary. The Bengals are pretty much the same so I doubt they fire Zach Taylor with a year left on his deal.
I wouldn't be surprised if they steal Wes Philips from the Vikings. He doesn't call the plays in Minnesota though so I could totally see that ending up the way Brad Childress ended up. Maybe Joe Judge in Buffalo gets another look? Sounds like a bad idea (good). Joe Lombardi in Denver? Sounds like a boring choice. The GB OC maybe? He's put in three years as a coordinator now but his background is a run game/OL coach, not a QB developer.
Anyway, long way of saying Chicago may have way more landmines to avoid than jackpots to hit.