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8: We can presently search by any combination of repository/spaces, via checkbox, which might be possible, but I'm not sure how it is done offhand. There is the hourglass for (just one) space, but then we get also into having to pick a facet, and none of them are from the uploaded jsonld.
9: I really like the metadata-search page, but most of our repos (&other aggregators) also allow for selecting a geo-bounded box from a map. As almost all our datasets have lat/lon coordinates in their jsonLD metadata. It will be a feature this geoscience based search will need.
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