The language Hero Zero is in is fixed depending on what server you are playing on. English on US and UK servers, German on the German servers, Romanian on the Romanian server. And so on.
But lots of people want to play on other servers, to meet new people, to play another Hero Zero character. Obviously, it's against the Terms of Use to make two characters on the same server. I wanted to join the new Romanian server so I could play another character from the beginning of a server's creation, to be instrumental in the formation of new teams and groups of players - helping to form the landscape of a new server. But obviously, everything is in Romanian. I know my way around the game from experience, but I would not be able to understand which missions to do to fulfil certain deeds, for example.
There are already many people who make new characters on different servers, but probably have difficulty playing because they do not understand the language. I think if you added the option of changing the language in the Account settings, more people would be motivated to play on multiple servers.
At the very least, you could announce to everyone when new servers are opening, since I would like to join one as soon as a new server starts.