Interesting concept. I'm not sure how I feel about the website analytics being global. I think have a simple API for individual users and personalizing their experience could be useful.
Thanks! You could use the service this way already. The last example here https://datadrivenjs.com/docs.html shows how to pull visitors last visit date. Of course, you could just as well pull the list of viewed products, last read article or the navigation items used most often by the user. Do you have any specific use cases in mind?