We change the formation because 2-3 starters are going to be suspended.
That's exactly it. Why I put down a 433 with the players I suggested. Our backline and keeper goes back to normal. We don't have to make any changes there. But now we have the following choices at Mid and Forward:
Mid: Bradley, Beckerman, Nagbi, Zusi, Kitchen
Forward: Dempsey, Wondo, Pulisic, Zardes
442 would have to have Bradley & Beckman in the middle. Zusi can play outside, but can Nagbi? I don't want to think about starting Kitchen vs Argentina. Up top; Dempsey and zardes. (you could put zardes in mid on the outside with Zusi, but then no nagbe and that's a waste of talent just to stick to a formation, it would also mean wondo or Pulisic up top)
433 makes more sense. Nagbi sit up top in the middle to create, beckerman holds the fort, and bradley sits back with beckerman but is also the link to nagbe. Then you can put pulisic, dempsey, zardes up top to do their thing. No wondo, because I'm not putting him in the middle and he's not going to track back as a wing.