Very limited muscle dials, hborre.
I'm still waiting for proper muscle morphs, particularly the leg ones and abs ones.
M4 Morphs++ contains:

Upper Torso: Traps size, Lats size
Chest: None
Arm/Hand: Biceps Flex, Biceps Flex Peak, Triceps Flex, Triceps Flex Peak, Triceps Relax
Lower Torso: None
Glute: Glute size, RaiseR, RaiseL, FlexR, FlexL
LegFoot: None

I would hardly call any of those proper muscle dials, since they are incredibly limited.
Not to mention, the bodybuilder morph ate steroids.

Silke