a report on any xml file, what information is useful?

Hi,

If you were generating views of XML files for display in some editor
type environment what would people be interested in seeing in sort of
a side display, things I can think of offhand -

1. Number of namespaces used
2. number of namespaced elements
3. Does it use specific namespaces
4. Any possible links in the documents
5. IDS and IDREFs?
6. XML Schema references?

Anything else?

Cheers,
Bryan Rasmussen