I've never been concerned with ratings, but my understanding is that previously ratings were perceived as being unfair in some way. The change Lazeez proposed sense to me. A five chapter serial story that I liked got five top scores from me, once for each update. A single posting story that I liked only got one top score, so a weighted system is logical. Maybe the weights need to be adjusted, one way or the other, but you've got to give him credit for trying to make scoring more equitable for everyone.