Being able to include the Hubspot tracking code would be huge so we could attribute page views to individual users and understand the full customer journey in more granular detail - right now our API reference is a complete black hole as far as understanding our top of funnel customer/visitor activity outside of pretty generic / useless out of the box & GA analytics. From conversations with prospects and customers it also happens to be one of the most important steps / engagements in our funnel that drives leads to signup & contact us.
Public documentation is not just useful for helping customers understand and implement your product but it is also a key marketing and selling asset.