The Bengals have been nearly nuclear on offense so far, and they can thank the offensive line for being improved. While there’s no dispute that this unit has improved, they have the potential to get even better. That starts primarily at the right tackle, where Bobby Hart has been disastrous. Hart has been sieve-like in pass blocking, so almost any other option will work better than him.
I expect the Bengals to look internally for a solution first, but they have to consider other options with how bad Hart has been. Jake Fisher will get his chance to start at right tackle at some point, I presume, but I’m not sure he’ll be any better.