Better translation status
There should be a ranking/rating involved with your translation stats and a good versus bad translations comparison. Also there should be suggested documents for you to translate that maybe would improve your ability.
Both are good ideas, and ones we have thought a bit about before.
A ranking of how good of a translator someone is would help us decide how much to trust their future translations and ratings of others. And of course, a good ranking would give them some bragging rights :).
And while we do currently try to suggest documents in skills that match your abilities, I think people would appreciate it if we could find them documents that better match their interests.