I think what is needed is a stylesheet that simply
checks a source document for namespaces,
and uses xsl:message to warn the user that any stylesheet
will need to utilise nsX nsY etc!

Then run this prior to running your own!
  It would save lots of blood sweat and tears!
DaveP

 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list