I think we may need a change, but am not sure what it is. I think that the past failures of the 4-2-2-2 was more due to Marsch's implementation than the formation itself. When we were playing that, we ended up with Sacha essentially being a winger and getting balls to BWP in the corners.
I wonder about:
Taxi Long Parker Murillo
Taxi and Murillo can play a kind of wingback role and Royer/Valot stay more central. Kaku stays forward and collects balls on the wings while BWP stays central.
Idk, maybe I've been playing too much FM over the holidays.