Total Progress and Impact - stats
Obviously it will never be possible to translate all of the internet because new articles will constantly be coming out. We can come close. It would be nice to be able to view the progress the Duolingo community has collectively made. That is, Duolingo's statistics.
For example, a count of how many articles have been successfully translated, one that could be broken down by whatever factor (language, location, timeline, etc). Or a bar that shows what percentage of Wikipedia has been translated.
I think seeing those stats change with time would be encouraging. The humanitarian in me can't help but to doubt how much good we are actually doing.