Can people now submit grant proposals in their own language?
I think they could, but the people who will eventually decide about the grant may not know the language. Although I see GAC members cover some languages. In my personal opinion, to help everyone in this matter maybe it is better to keep things in English. But the information pages on grants and its process should be translated to other languages so people from different languages can understand the procedure very well.
Regards, Tanvir Rahman Wikitanvir on Wikimedia