It seems the issue is more with site design, than the section itself. If I'm writing a novel, I'm wanting to get paid for it. It doesn't matter what the character limit is, the site seems to be designed more for short standalone style works, or at least not very intuitive of chaptered stories, like, say Wattpad, or AO3. Which is another reason I haven't done anything over 10k words here. With those sites, it's essentially like sub pages.
As far as the novels themselves, not knowing what they are goes back to site design, and is really an issue with every section, even if they are more catered to something specific; you don't know what it is, until you read it. The bylines are awesome and it's the only site I know that uses them. But they don't help much in determining what the story is. Tags should help. But what would really help is if there was a synopsis, and/or story information, especially in the list, instead of the first few lines of a story. Something like:
Sex Story
"Byline"
Man/woman, Outside, Mature, Novel, Interracial, Young Adult, Monogamous
A 50 something black man and 30 something irish woman, like to add spice to their relationship by having sex outside.
I believe StoriesOnline does something like that. The only reason I see a section like Novels stand out so much with this issue is because of how broad it is. Given site design, even more focused catagories come off just as broad, and honestly they are within the catagory they are. Like Transgender, for example; you don't know what you're exactly getting into, unless it's in the byline, until you read it. They only given is at least one trans person will be in the story. I could be looking for a typical My Trans Roommate story, and have to literally wade through everything not that, blind, until I see a story that eludes to that.
Breaking up novels to scatter the chapters across the catagorical winds, just doesn't seem like a good idea. I know I always don't have sex in every chapter. Mine are also in some way consistant in theme, which might be offputting to some readers seeing something where the main theme of a story is somewhere it shouldn't be, just because of a secondary theme a chapter is wrapped around, like a chapter of an story, because of an anal sex scene.