Something sbp came out with in #swig last night, hopefully he'll do something with it soon enough, but in lieu of that I thought it worth noting. Chimezie provided a neat summary: " a transformation-generating service that's a function of the GRDDL source document".Â
So the GRDDL transform link looks something like:
<link rel="transformation" xhref="http://example.org/service?uri=http://uriofsourcedocument/" />
service grabs the document, does the transform, and then returns
a trivial XSLT document containing:
<xsl:template match="/">
  <!-- service generated RDF/XML
here -->
</xsl:template>
Hence service could be implemented however you like. (Not sure how one might approach this for profile/namespace-embedded transform links, but it certainly gets past one obstacle).
@en