Due to a recent update a lot of languages have been added that you can have access to. Those languages allow you to speak with only other people that have access to those language with a specific prefix command such as /it "message" to say something in italian if you have the italian language flags.
Now where I am going with this (kinda obvious due to the title of the suggestion), I think Greek language should be added. I have seen multiple people roleplaying as greek individuals and it would be cool to see it happen.