To handle resources, like a jQuery library, I'd love seeing URNs being used. A Universal Resource Name is supposed to uniquely identify a resource solely by its name, and say nothing about where to find it - which is the job of its sibling, the URL. A website could state that they need "urn:uuid:6e8bc430-9c3a-11d9-9669-0800200c9a66", and then the browser could decide where to look that up. In my local cache? The cache distributed with the browser? The ISP's repository of resources? The original first party? My VPN provider's fancy anonymized lookup service? Whatever the case, it feels like a robust way to handle shared resources, and of course to introduce a myriad new ways to break UX but hey it's progress!