That's really great, I look forward to browsing the new 'Romance' sub-forum shortly.
May I suggest a long-term plan be based on the two sections of literature, ie, Pure Fiction and Non-Fiction, with a third section, Classic Books, in effect, spanning the two. I was tempted to further suggest Pure fiction be split again, in to Contemporary Fiction and Classic Fiction, but on reflection, even this becomes something of a minefield and would, I think, cause confusion and perhaps some dissention.
Equally, I feel attemping to Categorise Non-Fiction could be the ultimate minefield. The list would be endless, because each non-fiction reader has his/her own personal specific and detailed subject of interest.
My conclusion therefore, would be to keep it simple. How about setting three separate main headings, as follows:-
#1. Fiction. Seven sub-forums, comprising, Thrillers, Mystery, Romance, Crime, Horror, together with Fantasy and Sci-Fi each having their own sub-forums.
#2, Non-Fiction (encompassing every subject under the sun, excluding only fiction).
#3. Classic books (made up of both Fiction and Non-Fiction).
Not strikingly original, I know, but comfortingly familiar to OLBC readers and I believe, both logical and accurate.