I think it would be cool if some of the random events involving Anna would change slightly more to indicate her level of corruption, depending on whether you took a Romance or Slut path for her. I think her confidence and brazenness should peak a little bit higher by the end of the game, to simulate a total loss of her regret and inhibitions. Scenes like the Swimming event on the apartment roof, or when Anna requests a ride to the mall, could go even further with this idea, in my opinion.