I think we should all be taking a look at 4-3-3 a s apart of the problem. We no longer have Cesc around so no longer need this formation, with Jack injured also its not worth using just to stick with normality.
I think 4-3-3 stretches our team too much leaving us either exposed at the back or lacking any attackers up front. If we moved to a 4-4-2 we would have more options upfront as well as having a mostly intact back 4. I know there is a lot more tha needs to be sorted but this is surely a step in the right direction. From what I could see when Chamack came on we had more stability and more options in the box.