I like the idea of dedicating this forum to a specific class, but having it available to future students in read-only mode.
I agree with having separate categories for fantasy and sci-fi. I know they can easily blend (I definitely like doing this), but they can also rely heavily on different tropes.
YA is kind of weird in that it’s an age category with specific tropes that are common, but still heavily divided by genre. Not sure if it should have it’s own genre subdivision or not. If there’s a lot of people writing that here, then maybe, because it might be easier to pinpoint potential swaps. If not, then I think I’d filter it through the genre category first.