Paul R Brown writes about the benefits of not using XML — I totally agree with regards to RELAX NG’s compact syntax, and I still wonder why no one has come up with a compact syntax for WSDL yet. As WSDL 2.0 supports RELAX NG instead of XML Schema, that might just make it tolerable …
Yaron Goland proposed one a while back, but it though of as being a little late, noe if we’d only known they’d be 18 months of Last Call comments to handle .. http://lists.w3.org/Archives/Public/www-ws-desc/2004Jan/0071.html