I have an idea that you could be added to the All time stats or the year by year stats. Where you can see what actors or directors you have watched this year and what movies you watched from them. You should be able to see what ratings you gave each of their movies and compare it to the trakt ratings, IMDB ratings and perhaps the metascore and rotten tomatoes score. And it would be cool if you could sort by highest score on each respective rating system. It would be very useful and interesting to see what director you actually likes the most compared to what the trakt commnuities favourite director is.
I would love to see this getting feature added in the future! 
Keep up the good work!
//A trakt.tv addict