Last year's NaNo novel was a story I had been working on in my head for at least a decade, I can remember the first inklings I had about it back when I was still in/just out of college.
It turned out crap.
This year's NaNo novel was based on a short story that I wrote sometime in April or May and decided to expand dramatically upon it. Worked out all the story beats in a weekend.
Turned out way better.
(Though to be fair, the amount of work I did in prewriting for each book is an ocean apart. That first year really showed me how *not* to do things.)
Well I do have like two different things I'm working on. If this story idea doesnt lead into anything then that's how it is eh? I DO want to push more work out next year.