Say what?
To be a First Officer, well, you are a First Officer to the Captain. So just how do you propose to operate a flight with two FO's? Designate one 'Commander' and he becomes the Captain, right?
Where I work, Nigeria, we too have lots of 'Captains'
who wear four stripes but occupy the right-hand seat,
since they have only been right-hand seat checked. It's just another one of those things, I guess. Local sensibilities and all that.
I cannot believe that any serious professional should be so unaware of where his fundament is parked and which role he is expected to play on a given flight that he's going to have trouble being a second-in-command. Are we really such dullards? Some of us, perhaps!