I think right now Conte is trying to give everyone equal playing time or at least a fair shot, which is admirable and I think using the 352 allows him to get more players involved more often, even if it isn't our "better" formation.
For the 433 I'd use this, providing no injuries or suspensions:
Buffon
Licht-Barzagli-Bonucci-Chiellini
Vidal-Pirlo-Marchisio
Isla-Matri-Vucinic
I know everyone loves Asamoah & Pogba, as well as Marrone...I'd say rotate them in that order which is quite easily. All 3 can pretty much deputize for Vidal, Pirlo or Marchisio.
AND, its no coincidence that people are waiting for the "last seasons Vidal", and the same goes for Marchisio.
We really need to go back to the 433 because our midfield is just that damn good with it. Marchisio scored with ease last year and Vidal made a name for himself in Italy last year with that formation.
Chiellini? I'd rather have his defensive solidarity at the back as a LB than DC even though his runs forward can leave us compromised at times. Chiellini at LB is definitely more to a benefit for us that DC. Bonucci and Barzagli have a great partnership going, why disrupt that?