Due to major differences in the information returned from the TV API, as it looks right now, they will each be separate.
Besides that, I don't see the point of charging more for an add-on that does things some people may not want. For example, your people aren't into movies, so why should you pay more for the add-on for TV discussions because it contains the capability to start movie threads?
I was wondering how you would have got around the differences if it was all in one. I just wish my members would have had more interest in the mover one as it's a big hit on my VB site as you know. Oh well maybe I will just wait and see how the music one is as they are into music
The developer of the API has the Genre listing scheduled for December 31st. That doesn't mean it will be done, it all depends on if they finish it or push it to the next release date which has been done once already.