During November, "pep talk" emails are periodically sent out to Wrimos. Published authors wrote these pep talks, which was pretty cool. The post-NaNo one was written by Kelley Armstrong (whom, I must admit, I hadn't heard of), author of several fantasy novels. She had this to say to us unpublishing Wrimo winners:
What NaNoWriMo gave me was a quick and dirty first draft, and by the end of it, I could see that my book had some good stuff... and it had some serious problems and missed opportunities. ... If a multi-published author can’t expect to turn out a publishable first draft during NaNoWriMo, then neither should you. ... It’s a rare writer who publishes the first book they wrote — I didn’t — so practice is invaluable.
The "missed opportunities" part is so true! I am braving the waters of letting other Wrimos critique my steaming pile of— er, I mean, my rough draft. Just writing the synopsis for my story, I realized "omg, I should have done that to the character!" or "d'oh, of course I need to include this!" That's what revising is for, eh?