People make fun of Marchisio's "dacdical sense" but he really does have excellent anticipation. His IQ for the game is only amplified as a DM because he is in a position to focus on anticipating the hurried passes of our opposition instead of being the one who has to use athleticism to hurry the opponent (that is Vidal and Pogba's job).
Right now he is a bit like Busquets, who I hate but can't deny has excellent anticipation. Marchisio is doing phenomenally well at closing gaps and moving up as a unit to press higher and also being in perfect position to actually win balls that are 50/50.
And then he is smart enough to recognize that the players in front of him are the important players of the team and he releases the ball quickly so that they can get on with it up the field.
In a sense, he is almost the opposite of Pirlo and I feel this could be his best position at this stage in his career.