I've always preferred the 4-man backline, and think we should go back to it, even at home. We can still use the narrow pitch to our advantage by allowing the fullbacks to play offensive, effectively shifting to a 2-man backline in defense, and it also helps keep our wingers focused on the attack and allows them to cut inside with the fullbacks keeping the width.
In the midfield, start with Mix and Mac on a pulley, and have Bravo available to be a defensive midfielder sub for Mac if we have a lead. (Lampard starting for Mac only if we must.)
The 4-3-3 worked great in the opener against the same team. The only reason I can think of for why we switched out of it is that Vieira is trying to prepare a formation for Lampard's return. I'd rather we play our best formation and dial down Lampard's minutes instead.
And yes, I realize Hernandez is more likely to play than Mena and Saunders is more likely to play than Johansen. But this is a preferred lineup, not projected.