Are you people crazy or blind? The point is that THESE PEOPLE DON'T WANNA HAVE 1 ENCYCLOPEDIA. The proof is everywhere. E.g. why were SR, HR and BS created? Because people wanted to. Why is SH so underdeveloped (and 200, not 2000, is a very optimistic number for articles made in the project, not copied word by word from elsewhere)? Because close to no one wants to contribute to it. Is there an ISO for SH? No there isn't.
ISO codes aren't really an indication what is a language and what isn't nowadays. After all, Moldovan language (http://en.wikipedia.org/wiki/Moldovan_language) also has an ISO code...
As for your translation to Croatian, it's similar to how an American most likely won't be able to write properly in British English - his English will be well understood by the Britons, of course, but it will still have noticable americanisms.
Ausir