Well the deal when the short mags came out was you get magnum performance in a short action. But it turns out you can't really take advantage of it in a short action due to mag length issues. I do believe the short fat powder column is a plus. Just look at the ppc based cases like the dasher. More brass availability will probably see a few more guys going the custom route. But I think the wsm's had their moment and it's passed now. Remember it's the general public buying factory rifles and ammo that pays the bills. Us oddballs that reload and build what we want are the minority.