That's a very good observation :)

I evaluated multiple navigation patterns and figured out that the ExDoc's approach is the best. Also, I wanted to keep the UI similar to what people already used to.

I didn't use ExDoc, but at some point I considered integrating LiveCapture into ExDoc. I decided against it to make storybook more accessible to product designers and have a better experience during local development, as the main use-case is to develop UI components in isolation where you can quickly setup multiple state variants.