I really don't see why not. I mean how resource conservative does osu! need to be. If there is a part of the world where they speak a language natively, then it should be given their own channel. I would feel differently if all of a country typed in Russian or something, but if their dialect is different enough to warrant a new channel, then it should be so. My reasoning is that if we restrict channels based on how many active players, then you essentially forbid certain languages from being written in osu.
The question is whether your native language is different enough (and if there is an available person to be a mod for that channel).
The question is whether your native language is different enough (and if there is an available person to be a mod for that channel).