The exclusion of other languages to avoid exclusion of players who are not conversant in that languages has an adverse effect as it in itself ends up excluding countless people who are not conversant in English, or not fluent. Besides, if people join a realm that is active but speaks another language, how is this worse than joining the several realms who speak english but where no one says a word to one another? Just as when you decide what realm-culture you like the most before joining a realm, you could take into account which languages they speak.
Furthermore, not understanding other realms' languages would, in my opinion, add value, as it would create a more realistic midieval atmosphere, with in this case, instead of french as lingua franca, english and if you don't understand a torture report, there are many ways nowadays to translate it, or simply ask someone.
Having said that, I don't believe other languages will be accepted into the game.
