for me just need to put it smaller and only one or two official language, then, make like others forums, when you enter in a topic, it will automatic send you an alarm if you need a translation of that topic if they detetc that you are not in that language range user.
like english and of course spanish, since most of GM are spanish users
about portuguese section, as a portuguese i really would like that it stay, but i know that for 90% portuguese and brazilian users, in a multiforum, english is not a problem