I like the fact that post count isn't displayed. I wish it wasn't displayed in my profile, either. Every time I look and see how high it's gotten I feel bad about wasting so much time bumming around a message board.
TheFluff has a good point. The only thing I'm missing is the rep system's "instant troll detection" functionality. People with red squares or disabled rep always raised a red flag with me--not that everyone with disabled rep is a troll, but a lot of folks disabled rep because all they received was negative rep for their trolling or highly inflammatory posts.