When reading the forum I see mostly see German Language Icon's, which isn't weird because most players (My guess would be +50%) are German. But It would be nice If you can select multiple languages for your Topic. This topic is selected to English but could have a German Translated part (or Vise versa) as well.
Steam has a Option for this. You can add multiple languages for your item.
More Language options on the Forums would be cool!