MOST F/O's IN EK HAVE SIGNIFICANT COMMAND TIME - well then what a mistaka to maka join as an F/O.
Golden rule - once in the LHS think verrrrry carefully about moving out of it. Most people who do it don't repeat don't get back in the LHS in the timeframne that they envisaged.
For the other F/O's - The DEC's will mostly have been through hard times and tough decisions themselves to get where they are today. You will be Capts yourselves one day and unless you think you're going to spend the next 20 plus years in EK then you'll be looking to go somewhere as a DEC - .......hmmmm? Or perhaps you've got some moral objection to that and you'll happily explain to the wife and kids why things are going to be cut back as you voluntarily step into the RHS again to avoid upsetting the young chaps.
No, I don't think so - do you?
Grow up guys