When i am looking for a story to join, i'd like to see a couple things:

1) Involvement: What level of involvement is the story creator asking? Light, normal, or serious Light meaning not much thought is required or even wanted for the move. Normal meaning give it thought but don't try too hard. Serious meaning some good thought and serious role playing.

2) Purpose: What is the story for? Is it a test whether testing the system, a world, or even players? Is it for beginners or for advanced players?

While these can be mentioned in the description, a sanctioned setting for Involvement and Purpose would standardize it and make it searchable.