Most of Europe's top teams play either 4231 or 433. And I suspect for good reason.
352 is common in Italy but nowhere else. That is fine - I am ok with that. But having said that, I really would like us to have more tactical diversity for 2 key reasons:
1) Bayern and to some extent Celtic showed us what happens when an attacking team is really keen to press our back 3. That rarely happens in Serie A. So we need a plan B for those reasons.
2) Pirlo. Juve's formation is built around him. That is not healthy and we were lucky that for the most part he has not been injury prone over the last 2 seasons. However, given his age etc we NEED A PIRLOLESS type of formation. Forget about getting a vice-Pirlo - they don't really exist (Verratti excluded). Pirlo's inclusion means a 4231 or flat 4 midfield is out of the question. the 4231 with Vidal& Pogba behind Diamanti, Marchisio, and Jovetic is a good example of a Pirloless formation.