Tigerland, I agree it would be terrific if the Wallabies could use Cooper's kick returns. Cooper's kick returns have set up so much attack for the Reds, not to mention dug us out of a few tight spots, I would think this would be worth a try. I also doubt Deans will go this way, but would like to see it in action.
One of the things with the Reds, is that they have either Lucas or Jono Lance, two normal 5/8s, standing at 10 in defence. So they are familiar with using turnover ball to counterattack.
You can't do a straight swap with Beale - as you say his kick returns are also excellent, so that would be pointless. But if O'Conner is at 12, AAC (Adam Ashley-Cooper) at 13 and Ioane on the wing, Cooper could shuffle to the wing in defence, with O'Conner, AAC (Adam Ashley-Cooper) & Ioane defending at 10, 12 & 13. This leaves Ioane free to roam in attack, which he does best from the wing, but he is still experienced at defending in the 13 channel. On turnover ball O'Conner is at first receiver, a role he is familiar with also.
We then have teams kicking to a back three of Cooper, Beale and Mitchell/Morahan/Davies.