So your goal is a networked world where metadata is routinely trashed by apps developed by those who are too dumb or otherwise disabled to preserve metadata and only the big boys get to do interoperability, right? So if I send you a document for your editing, I can't count on getting it back with xml:id attributes intact.
No thanks, Patrick. That sounds way too much like how things have worked ever since office productivity software first came on the market. In your world, interoperability belongs only to those who can map features 1:1 with the most featureful apps. And that is precisely why OpenDocument never should have been approved as a standard. Your kind of interoperability makes ODF a
de facto Sun Microsystems standard wearing the clothing of a de jure standard. Why not just standardize the whole world on Microsoft apps and be done with it? Are two monopolies maintained by an interoperability barrier between them better than one?
Fortunately, we don't have to debate the issue because the Directives resolve the issue. You lose under the rules of the game.