One thing I really like about IOI and similar contests is that everyone gets a printed copy of the problem statements translated in their language.
While I understand that giving a printed copy to every contestant on codeforces would be hard, what stops us from having statements translated to our language?
I do understand english good enough, but sometimes I am unsure and it seems really unfair to me that english speakers have an advantage of this kind, so I propose that rated contests must have their statements translated to every language of participants!