My best player is also my AMC, he is a 2 times balon d or...will be a 3 timer next year probably...
my setup is, having inside forwards, and a poacher/AF infront him.. i use a formation like Real madrid IRC...
My AMC has full freedom, dribble always, run from deep sometimes.. also, i have a BWM and BBM behind him.. I also make him my set piece taker..
a great AMC needs to have a great dribbling IMO, he swifts himself through the middle, then, either through or any of my IFs and striker are free. then he pass up... he got like 20+ goals and 40+ assists a season... though lately, he's been racking goals, maybe he is reaching his prime, now at 25