Agreed about blue arrows on the ST's and DMC; Don't know how I missed the blue arrowed ST on my first comment.
Regarding the midfield, I understand your point of view. However, I like using 3 players (DMC/MC) to defend my midfield, instead of 2 when playing against the central focused ones such as 4-1-2-1-2 ND, 4-3n-3, 4-1-3n-2, 4-3n-1-2, etc...