You know Ozil won't stay deeper though or stay wide lol.
He's a free spirit in that regard, the guys happy so its best to leave him where he is plus a 4-4-2 actually changes how we play, a 3-5-2 not so much, we can still dominate midfield with our passing game.
4-4-2 is more cut and thrust, more end to end, our midfielders like time on the ball.