What's wrong with just playing guys in their natural positions?
With the way Hayden Young zones off, intercepts and drives the ball forward from the half-back flank I have no idea why we'd not use him there.
He's starting there in the best 22 whenever he's fit for me.
As for Logue I imagine he'll be in the 22 as a 3rd KPD as well. If Cox becomes the depth that's not a horrible outcome; good teams will have good players in the magoos because they can't fit everyone into a side and so long as Cox is willing to wait for injuries or a spot to open in the side for him it's not a huge problem.
Nothing wrong with Young or Logue in defence. The problem is that neither of them played significant roles this season, and Pearce and Hamling will be back. Walker looks all but ready to debut as well.
If you are managing our list it is way out of whack taking 4 players out of a well performed backline and playing them in the wafl because you think they should only play in the position they played as juniors.