on the subject of schema crunching...

Has anyone built an XSLT-based schema unification application?  Is anyone interested in working on one?

More concretely, there are a good number of well-designed but large schemas that use common data dictionaries, etc., but as a result are cumbersome for both human users and processors.

Is it possible to take an XML schema -- together with all imports, includes, and redefines, and construct a single "unified" and optimized schema that lives in a single file?

I've got a start (in the form of an almost-working set of stylesheets for the single namespace case), but this may have a simpler solution in the context of some of the recent discussions on the list (e.g., w3c -> rng -> single rng -> w3c).

	-- Paul Brown