I know what you mean about seeing both sides. I've seen it too. Your idea probably is a good one, however, that would not have covered couples like my husband and I who didn't realize the value of a stay at home parent until AFTER we had children. How would you cover for couples like us, who like many other couples, change thier priorities and goals as thier life circumstances change?
I don't know ---it gets very complex because so many cases are different. I think for the sake of the children, it would be better if couples negociated for themselves before they agree to marry ---leave the lawyers and judges out of it all and they'd also save money. If a couple agreed both would work and things would be split accordingly, but then changed their minds, they could make another agreement.
It's always better for people to settle their own conflicts but sometimes during a divorce, one is too hurt and bitter, so maybe it would be best to do everything up front. That way if a man promises a woman he will always take care of her and wants her to stay home with the kids, it would be in writing.