That’s nice, but Catalan and Basque have little to do with one another other than both being found in Spain and to a lesser degree in bordering areas of France. Catalan is a Romance language and Basque is a language isolate; there’s not much overlap in their territory (largely Basque Country vs Catalonia) and even less among speakers.
I don’t mean to be too negative on the project of cataloging profiles written in various languages, so much as I don’t think it’s a helpful end in itself. It’s not helpful to have original materials in a language that users don’t understand, and as far as recruiting genealogists who are native speakers of these languages, I think WikiTree has bigger internationalization fish to try in terms of Anglo-centric UI and database structure.