The community is still, despite its growing active user base, small. It's smaller than most other boards and, because of its size, attracting attention/keeping players is rather tough.
So, for most games, it's tough to get started. And, for the few that do start, it's harder to keep it running (a fact on nearly all boards. Dedication has always been shaky, at best). I think, if you want to start a game, but aren't sure of the reception, you should post in the brainstorming/interest thread. See if anyone else is interested in what you have in mind and, from there, take the next step, etc, etc, etc.