Zambrotta usually played a wing back with a winger or sided midfielder his secondary position but as a true CM I dont really remember him playing..
Camoranesi is a different type of player as he is less about speed and more about control and creativity - Camoranesi is one of my all time favorites
Cuadrado is more about speed and dribblings which are more required for a winger than a CM. Also Cuadrado will get lots of cards if we are to play him there...
The truth is with Vidal we lost some defensive abilities that are less seen on the eye more on results... Its not the end of the world losing Vidal and Pirlo as we have Marchisio who can take the Vidal type of duty and we could sign a creative player to play the Pirlo type of duty (not necessarily same positions)
Also we do not have a great FK taker with Pirlo and Tevez gone...
Also noticed Pogba is a very poor corner taker
As I already said myself, Camo and zambrotta were more suited to the role, in other words different players. Before Camo took his role, Zambrotta played in a wide role in a 4-3-1-2.
Zambrotta Tacchinardi Davids
Nedved
Though Zambrotta's interpretation of the role different to Camo's of course. ITs about the balance in midfield, as Camo and Zambrotta had more wide roles and Camo a more creative role, with Tacchinardi and Davids doing dirty work.
Same could work for Cuadrado going more wide, with Marchisio and Pogba going more central.