I'm interested in hosting a chan board. I've set up wakaba before and I have a domain set up so I'd like to know if there's anything I can host. Either way Higurashi and Umineko are going to get a spot.
Have you considered the history of specific series boards dying due to lack of interest? /a/ is a better venue for such specific matters.
My advice to you is examine the adult /niche/ board, and determine whether there is a perversion of such popularity that it deserves its own sub-board.
If someone would make an adult /monster/ board that would be nice.
There are some mega-threads about them in /happy/, yet /happy/ really isn't the board for that. I'm too carebear to nuke them, but I'd like them to go.