[bendyBus]

Good point, but I could imagine certain shapes becoming very recognisable after a while. Ensuring the ordering is such that a 5-1-5-1-5...pattern is unlikely, since these spiky shapes will all look the same. And yes the angles don't carry any extra information, but they are a helpful guide to the eye. I can see where you're coming from, but thinking about these plots a bit more carefully I think you are too dismissive.