Yes, I'd rather a back 4 at this point but if Conte likes the back 3 + Licht and Asamoah then he can use something like a 3-4-2-1. Because I agree that he is obsessed with this back 3 now.
not once during pre season did conte play anything but a 3-5-2. nothing to hint at him having a different formation in mind. so unless he plans on using nani as a wing back.....yeah