I agree the balls are a bit off..but the hands can be great... Selecting the right materials for those is important to give it value..Ok ... Thought you could build the flyball mechanic somehow from the hands. Miyota also offers retrograde movements but those are quarz. So the torque on the hands is rather weak compared with an analog mechanical watch.
I like the ring shaped hand as a first start, but I'm not sure how the audience will interprete the flyballs