Could Duolingo provide a much larger selection of documents to translate but only unlock a document for translation once it is voted up enough?
But the suggested system could eliminate the three-sentences articles or other snafus that I've seen. And anyway, I'd definitely upvote science and literature over some of the other nonsense. History too. I actually learned a lot with the articles "Pangermanism" and "France in the Twentieth Century". :)
I'd like a larger selection, but I don't want them to be just soccer, sports, luxury, shopping, fashion, etc. I'd rather see more articles about science and literature which might not get the most votes.