I've been going back and forth over which of two projects to work on in the coming year — either The Young Gods (formerly Vajra, never did like that title) or The Number of Magic.
The way I pitch the latter: It's like The Four-Day Weekend but about pagan/Wiccan life rather than fandom, and that much more serious a story. Same basic approach, though: show the life these people live, don't condescend, and make it about what these people do with what they believe rather than focus on the beliefs themselves. A lot of research to be done for that one, too, but I think I have enough to at least get the fuse lit.
Which I might end up doing this November, even though I promised myself I wouldn't do anything of the kind.