Rp Tutorials

I'm not sure where to ask this, so I hope this is all right. If not, I'll delete it.

I have an idea for a fandom-based game that I would love to make into a community, but I would like to gauge interest in it before I go through the process of setting it up. Where would I do that?

If it was a group psl, I could post at ~fandompsls. The only other comms I can think of where I could ask this are ~fandomads, which doesn't seem to get much traffic, and ~pbads, which gets so much traffic the question would be flooded out in a day. Is there some community I'm missing, maybe?

Thanks for the help either way!