i not pretend you like my proposal but when you opened your team i just had tried much more combination you can imagine and in the end, as players grow different fast, i can guarantee you that arrive the point when someone need something different for arrive like you want
if you draft players you cant pick skills, age or how tall they are....
if you get injury, fauled out, what is supposed to do, throw away 5/6 seasons of training? or whatever ruin 5/6 season of work more than just this risk can do?
easy is get money gifted from chicken or from empty country when they fall from the sky just loggin in, train a complete all around player is not easy, try it before say that train out from position can be easier in whatever way you do it