The one time I tried, which was 20 years ago, family medical events forced me away from it. Every year since then I've either forgotten or have been busy, but this year looks good.

The homebrew D&D campaign I've been running for several years has a world-scale plot the players are getting close to resolving. Nothing earthshakingly original about the overall plot - typical evil empire trying to conquer the world - but I've created a lot of episodic adventures, on a background of local cultures and a layered ancient history that's been keeping the players interested, and there's definitely enough material for a novel. So why not?

So is anybody else doing any advance thinking about their project?