Not sure I understand the arguement some make that we need to just wait another season and then fire DA.

If he is an OC on another team he'd probably have to be made OC/ Ast HC for it not to be a lateral move. Could be an opportunity for one of the in name only OCs like Frank Smith or Brian Callahan . But I think my #1 candidate for OC should be Musgrave. DC had what may have been his best yr with Musgrave as OC for the Raiders
I don’t care who Carr had success with in the past, I would hire the best available OC for the team. Carr can get on board with the new OC, and the team can flourish, or he can continue being meh, and we can show his arse the door after next season. The choice is his.