I think there is merit in this; given that XML Namespace is
a separate standard layered on top of XML 1.0, and that it
is perfectly legitimate to conform to XML 1.0 without
conforming to Namespace. It makes sense to reflect the same
structure in the API.
In practice it would probably amount to much the same thing,
the user would have the choice of giving the parser either a
DocumentHandler with the current interface, or a
NamespaceAwareDocumentHandler with a new enhanced interface.
Mike Kay