I generally support your suggestion, but I’m not in charge here. Take a look at the Plan and the Roles. There is stated on what conditions some users can get promoted to Leaders by the Admins, the latter being necessarily limited to only 5. The most engaged of them in Discourse are @vchuravy and @StefanKarpinski. There is currently no provision for language-specific roles:
But maybe they can figure out an alternative or an intermediate solution until promotion becomes possible.