I'm not sure that there is a franchise QB in this draft and I tend to think there is not. But, I think if the team thinks there is one you take him or even trade up to get him. If not, take BPA.
But, more importantly, I think you have to let the next head coach make the QB decision whether it be keeping Carr, getting rid of Carr, drafting a QB in this draft, starting Rattler, or starting Haener.