Problem description

While tsv, and csv are ok. We can create nicer results by directly generation a spreadsheet.

Preferred solution

Generate a styled XLSX with data and formatting done by the server.
This would include having links in cells for IRIs, which show localnames or prefixed IRIs instead of the full value.
Datatypes are converted to the right cell types.
Headers are setup, pivot tables might be created.

Are you interested in contributing a solution yourself?

Yes

Anything else?

Adding the metadata of which server evaluated the query, the query, when, runtime etc. would be nice to add to the File properties.