We currently exclude a wealth of common file formats -- and as a result, ecosystems of knowledge. How can we elevate the general priority of broadening supported formats?

In the past year I've worked on projects generating public-domain *csv*s, and public-domain *epub*s, and each time found that there is no place in the wikiverse to store them (and no other community archive that is remotely as reliable and useful). Each time I discover this, my mind actually goes blank for a moment in crogglement, and I seem to forget that it happened. But today I retained coherence long enough to write this note.

Commons's list of Unsupported file types https://commons.wikimedia.org/wiki/Commons:File_types#Unsupported_file_types* says "help needed to support these" -- what help is needed, and how can we get there? Are all 40 of the formats listed still really unsupported?

SJ