and if TonYPL decides to speak Polish for, say, a Klyros, and says that he is just speaking in his Klyros tongue, that would mean that every Klyros player should be able to understand him.
I disagree. Chinese and English are both Human tongues and not all humans speak it.
I agree there should be a standard, but if two people from Poland want to say Polish is an exotic Klyros tongue there should be nothing wrong with that.
I don't remember reading anything about no regional dialects or anything like that so I will, for the sake of the argument, just take your word for it.
But then we have people who claim to have been transported into the land, who says they wouldn't speak a different language...it would be probably that they spoke a different language, they'd learn the Yliakum language (english) but, the could still speak the other language to those who also know it.