I was thinking the other day about big list and other soft questions and had the following crazy idea.
It seems to me that what we want is to occasionally have good soft questions. The main thing that causes the close fights is the feeling that if we don't close soft questions there will be too many of them. We could have a thread on meta where people propose soft questions, and every week or two the one that's highest voted gets posted to main.
This would result in higher quality soft questions, fewer close wars, a consistent stream of soft questions for people who like them, and a cap on soft questions for people who don't.