4312 is a great option because it has 2 strikers wandering around at the half way line while our world class midfield is left alone to vacuum up ball after ball, like they do so easily all the time.
What I like most about this formation is that you play with a CAM who has absolutely no one around him while pressing, so he can really show off just how headless a chicken he can be. This is why Allegri did not want to sell McKennie.
In possession, it's incredibly formidable because you are asking 30+ year old fullbacks to play two positions at once, winger and fullback. How can the opponent beat us if we have 13 players?