Well... this figure is a good start-- but it's only a "start."  Before you go adding morphs, I think you need to focus on refining the base figure to conform more closely to actual human anatomy.  For instance, the outer quadriceps do not extend clear down to the knee-joint; they stop well above it  And on the feet, the inner arch of the foot extends clear to the "ball" of the big toe; it does not stop halfway along the length of the foot.

Human figures are the most difficult thing for any modeler to get "right."  You've got a good base going, so concentrate on getting the base into shape first.