Just a bit of tactical talk, but I can vaguely remember Schmidt being criticized for essentially using both 12 and 13 as proxy forwards in his tenure at Ireland. Just hitting it up and letting the 10 or 15 make the loops.
This could be a reason why Sua'ali'i (and let's be honest Ikitau aswell, he has done nothing much besides hitting it up) is misfiring in this scheme. Hopefully Kiss can engage both a bit more, looking at his Reds plan with Paisami and Dre I think he does have that tactical ability (or willingness).