I'm very selective with the external scripts allowed on my websites. Ad networks are notorious for running malicious JavaScript on popular sites like NYTimes[1] and Yahoo[2] home pages. Any plans for an API so sites can receive ad content as JSON and display it without ever executing your external JavaScript? I might consider it for future side projects if I could npm install your client library instead of including an external script tag.
[1] https://www.nytimes.com/2009/09/13/business/media/13note.htm...
[2] https://www.washingtonpost.com/news/the-switch/wp/2014/01/04...