Cool addon! One thing that I would love to see in blender about the shape key… is to have a control in the shape bone to adjust the scale of the shape bone individually. For now, the scale is set by the length of the bone and by the size of the mesh you use. But when you use the same shape for several bones, then you don’t really have control. I would love to be able to resize the shape key but just localy and without have to create another Mesh object with the same look but just at a different scale.
I don’t know if it’s possible, but I would love it.
Thanks for sharing.