It's a good lineup. CR7-Dybala-Cuadrado is much better than CR7-Mario-Dybala, which never looked good.
Back-three isn't ideal to attack with against attacking wingers and FBs. That was last resort for added protection if we didn't have a third fit CM or had to play someone out of position (Cuadrado or AS, meaning MDS as WB, which is worse) there.
Will be amazing if Mou sits back against our CMs with fatigue and match fitness issues.