Problem: Data formats for chemical structures exist for long time: w:Chemical Markup Language, w:en:Protein Data Bank (file format), but WMF projects on chemistry topics still used rendered files, generic SVGs and projections of 3D structure on plane without possibility to view structure in 3D.
Who would benefit: All editors who work on chemistry topics.
Proposed solution: WMF need to allocate resources to add support for feature proposed back into 2008 or may be one of local chapters may take a lead on this as Wikidata was implemented by Wikimedia Deutschland.