When you've mentioned your namespaces by convention you've given examples of
both <org.w3c.svg> or <org.w3c.svg.svg> as top level element names. I
wondered if you had ever thought long enough about it to decide which option
you prefer? (If so which?!)
To me <org.w3c.svg> seems prettier, but <org.w3c.svg.svg> more naturally
embraces org.w3c.svg.rectangle.