Like, you could have an aggregator relay that lets you filter by language.
Don't know, if nostr.land has considered something like that. He's working on an AI-translation service, so nostr:npub12262qa4uhw7u8gdwlgmntqtv7aye8vdcmvszkqwgs0zchel6mz7s6cgrkj has the tech stack for it.