I would personally like to come away from the 4231 formation and actually play a more 4141 formation, with 2 more forward thinking midfielders.
When you saw england play, the 2 holding midfielders we looked dull, we looked poor. But when we had to move to 2 attacking CMs we looked far more dangerous.
Yes that potentially may leave us exposed against the far stronger teams and therefore we could drop back to older formation but I genuinely think we have the attacking threat to play 1 forward, 2 wingers and 2 more attack minded CMs(AMs).