Giving me the heebie-jeebies is good enough reason for people to want to do something, I’ve found. 
I did abandon an idea for a NiaD a year or so go because I thought it would work better as a graphic novel than a normal novel, but I can’t use that now because I already posted the working title (which gives a fair bit about the idea away) in this very thread.
I like the idea, though. I suspect Graphic Novel in a Week might be more achieveable, but I have a day job so I can’t see that happening anytime soon!
The idea I could see us doing soon is Cookbook in a Day…