If you want to have a separate sub-board. Then there's still a long way to go in terms of activity. One of the requirements is if the current other languages thread is very activity with so many native Persian speakers posting there.

In that section, the Việt (Vietnamese) , Pakistan and বাংলাদেশ (Bangladesh) user s seem to be so active but are yet to get a local sub board of their own. I think I have seen several requests for at least one of the languages before, but they have all been in vain so far.