listing of proposed XML revisions?

I'm wondering if I missed it in the flood, but has anyone posted a 
collection of XML simplification projects?

In addition to recent postings, I'm aware of:

XML-SW - http://www.textuality.com/xml/xmlSW.html (Tim Bray's Skunkworks 
proposal, complete with marching skunks)

Common XML - http://www.simonstl.com/articles/cxmlspec.txt - (an 
offshoot of Simplified Markup Language work)

I can't track down what happened to Simplified Markup Language, beyond 
its veering into YAML <http://www.yaml.org/>.  That project is still 
alive and well, and might be the right answer for folks who want to go 
beyond JSON's capabilities for programmer-friendly data structures.

If there's a central listing of these somewhere, I'd love to know about it.

Thanks,
-- 
Simon St.Laurent
http://simonstl.com/