I don’t want to get into the argument about whether these localizations should exist at all, but definitely for the purposes of geo-redirecting people to sub-domains of WordPress.org, we should immediately retire en-au, en-ca, en-nz, en-pirate?, en-za, en-gb. The canonical links and structure for plugins, themes, etc on WordPress.org in English should be just be WordPress.org. Having these URLs show up randomly depending on what country people Googled something in is bizarre.