[georgemcbay]

It would be really cool if you could use a PS4 plus one of these boxes to do dual screen co-op as an alternative to the usual split-screen local co-op.

This is certainly a niche use (and Sony may not see it as being in its interest since it might cost them a small number of full PS4 sales), but it would be pretty cool and Sony has done plenty of nichey things in the past like using 3D tvs to do full screen co-op where each user sees a different image on the same tv.