yeah it is hard for SF trainers, but also they got the chanche to keep pretty good Sf, or sell then for a good value ;)
So it hits you at the end to.
But if you change it now, you punish the trainer who did it already because it was pretty easy, for other managers to clone there SF which they have trained in playing them in wrong positions. Thats reduce their value, which adjust the lost game they got sometimes why they play their player at wrong position.
PS: i should up with your beginning post, when you sayy you was my opion and in the end it wasn't mine ;) Thats sounds more like a fed ad which ended in the wrong forum.