This has been sitting around essentially unedited since it was imported from TVTropes during the fork. I'm thinking that might be because it isn't really a trope, just a definition of a term. Should this be a Useful Notes page instead of a Trope page?
Trope Workshop talk:Subgenre
Is this a Trope or a Useful Note?
You know, that's a very good point. I say make it so.
Done. The page still needs a better description, though.
And it needs to be moved back to the main namespace. A useful notes page might be fine, but maybe it's a category, like Category:Genre. Or maybe even just add this to the Genre page and redirect.