Does a story have to include both sisters to be added, or is it okay to have just one of them as long as neither one of them is being bashed or treated unfairly? Also, have you thought about adding more folders? It's usually a good idea to have most of the major tags/categories represented, like "Slice of Life"?

I can think of at least one cute Luna SoL fic that's worth adding, but (A) I don't know if it's allowed since Celestia isn't in it, and (B) I don't really have a good place to put it.

4054621 for your first question, yes, both sister's have to be in it and play a big role, and for your second,
We are thinking of putting in more folders. Both sisters have to be in your story.