Also, Fred, the fact that Pirlo was in the Milan midfield that was dominated by Arsenal is hardly helping your argument that he could function in a two man midfield.
that had nothing to do with Pirlo - the whole team was already on the way down, without motivation ... that same season even average Serie A teams dominated Milan resulting in Milan not making even the CL.
This being said, I agree that Pirlo is unlikely to be suitable for a 2 men midfield ... my guess, however, is that Conte will quickly realize that this is not Serie B he is playing in and will adjust his tactics to a 3-men mid.
I don't think Juve have the players even for a 4-4-2, let alone 4-2-4 - you guys played a 4-4-2, on paper, under Lippi but on the left wing, you had players like Zidane first and then Nedved, who are really central attacking mids and not real wingers, so they would usually cut in and that provided equilibrium to the whole team. Even players like Di Livio and then Camo - the right wingers - were not typical wingers but could play a more "inner" midfield role. Most importantly, however, they both were fighters ... Juve, right now, simply does not have such players.
So, I think your best bet for a solid and equilibrated team is one playing with a 3-men mid.
my 2 cents
