I agree, but being good both at programming and art is quite unique skill, then there is also whole audio category, animations,...

The gaming world badly needs a central repository of art, only art (graphics, music, scenery, world maps, objects, ...) sort of a highly specialized Github. It should promote using well known file formats and structures to ease importing this or that object into a game project. And possibly allow the use of the torrent protocol to avoid clogging central servers as data files usually represent the heaviest load for a server.