Hey man! I'm glad that you brought this up.
Alexp, March5th00, madglee and I have been corresponding about this very topic. Here's what we've decided to implement:
We will be slightly modifying the rating calculator so that story ratings are calculated a little bit differently. To avoid rating brigades and rating cheats, I won't go into the specifics but it should reflect reality a little better.
Storygames rated less than 5 will be hidden by default from the games lists viewable by entering categories. They won't be hidden from the new games list.
Like right now, you will be able to manually set your filter so that you see storygames of any rating or of ratings less than any number you choose.
The default will be 5 though, so that new members and guests don't see all of the garbage. In effect, we'll get the same effect without the mess of creating a new category.