Jane Espenson recently mentioned something on her blog that is resonating with me, in a somewhat painful way.
It's a less violent variant on the 'kill your children' writing advice.
Jane likens some ideas to bay leaves. You really need them to get the sauce started. They help develop the flavour. But when it's time to take the sauce out of the saucepan, you gotta get rid of the bay leaves.
There are a number of scenes in my novel that are bay leaf scenes. A couple I have changed radically, most I have simply deleted. It's sad to see them go, but I know the book will be better for it.