No I definitely do NOT think you're being stupid. My selection of "schema" was poor. Maybe "scheme" -- since that has fewer specialized overtones -- would have been better...and there's probably something better yet.
And your comments above must have unlocked a synapse or two. But if you are suggesting that the "tag cloud" be generated from the content of the nodes found by SuperSearch, the issue I raised seems to me to be unresolved: What tools would we use to determine which parts of the returned_content should be applied as tags?
<Grin>... and if we continue this discussion, why -- you may have written the necessary code by the time I attain even minimal understanding of how "convenient" such development would be. In that (happy) event, I expect your elevation to Priest or Abbot or even Cardinal to occur precipitously... concurrent with an invitation to become a Dev(il).