A suggested improvement to Special:GoToLinkedPage is to add an option to automatically link to the user's preferred language (Accept-Language header?). This method when the wiki sitelink group (without language code) is passed as argument. Example:
If no language was detected or there were no language links present in the item for the detected language, the fallback behavior should be to forward to the corresponding sitelink section of the item page.
Whiteboard: u=dev c=backend p=0
T65463: QRpedia should point to Wikidata entity
T72127: Error messages for Special:GoToLinkedPage when requested target doesn't exist