Like if I wanted to make a character blink but half way through the blink the eyelid penetrates the eye so I would want to add a shape that goes into full effect whenever the slider for the shape is at .5 then from .5 to 1 it would transition from the half shape to the full keyshape. If that makes sense. So its like two shapes in one. I know I can just use bones for the eyelids, but its just an example