Well that's on me. I honestly never noticed that one. Then again I never upload LitRPG's. Anyway, it's the same argument as Urban fantasy, as is Doctor Who. It just narrows in the search.
No, it is not the same.
"Urban fantasy " is already a category. It's under the link labelled "Paranormal".
If you can draw a line between these that all uploaders and prospective downloaders would follow, go ahead.
I know of a lot of the so called Cozy mystery books that have paranormal elements in them, but wouldn't be classified as Urban Fantasy.
Or you could equally say they have urban fantasy elements.
A witch who solves crime is urban fantasy. That's what Dresden is all about.
If uploader thinks that "Mystery" is the dominant category, that's fine.
But sure, you can search for the term GraphicAudio or Graphic Audio
So, problem solved.
Also, on a strategic level, I think it a bad idea to have a category named for a publisher.
That is really spitting in their face. It could be construed as the site actively encouraging people to pirate that company.
That's why we have "Doctor Who" category but not "Big Finish".
And we have "Full Cast" which covers both of those styles of production.
Might encourage some to broaden their reading a little.
Again, all moot if the uploader can't be bothered to use them.