What do you guys do when you're in the middle of a story when you suddenly get a new idea that you would have to rework the entire story for it to work. It's such a gamble. It takes a lot of effort, but you could have something much better at the end. Or, going back and revising everything could take away the momentum, leaving you with no story. And the idea could also be a dud when put into writing, and then you've wasted a lot of time and ruined something good. So what's the best approach? Try and finish what you've got and then come back to it? That could be a big waste of time. And, it could take away a lot of the quality of the story, because you'll always have this little niggle in the back of your mind. So what's your solution to this predicament?