[kennystone]

If you are going to start from scratch, why would you ever use XML? XML violates so many things we know to be good, including the essential lisp idea of 'data is code' (which json does OK), not to mention it's ugly, hard to read, and makes for arbitrary patterns.

[extension]

The one thing XML is great it, as the name suggests, is markup. And I am in favor of marked up text continuing as the basic model for content in any next generation web platform.