411A
Respectfully, I would like to disagree with you.
"F/O does belong to the Commander" is quite different from " is under the direction of, the Commander".
Sir, CRM has been around for sometime now... And I am sure you know why it is there.
Yes, Captain is the one who has the overall responsibility for the safe conduct of the flight but to think that the F/O is only there as a decoration piece, means that you have not fully understood the benefits of CRM.