@Rubén Could you please tell me what do you disagree with in the context of tag naming? I mean, I've updated the question with info why we cannot use Internationalization and localization. Or you did you mean something different?

@NicolasChabanovsky The edit tha you made on rev 10 doesn't look to address what I said on my previously linked answer.

IMHO international is bad it tooks too ambigous for Meta SE.