Lower shape, Raise Shape and Hiding Edges will be added in Timeline

My Intend
I am doing like this
Hiding Edges
When I need to change the overlap line, I have to use 'line width' tool and I will add more points for a shape. Another option is making separate outline with a selected points. I have to change the alpha value of outline as '255' or '0' for done this.
Lower and Raise Shape
I am making many shapes in a object itself. I will change a shape alpha value as '255' and others alpha value will be '0'
(Shape Ordering will be needed as layer ordering. This will avoid using more layers)
In My work
I have used each layer for each one:
In a human object: 1. Head 2.Chest 3.left hand 4. Right Hand 5. Left Leg 6. Right Leg.
My opinion
Layer ordering for a Human head, chest, hands, and legs
Shape Ordering for a Head eyes, nose, ears and mouth
Thanks