I can't think of anything particular on the Divorce Act off the top of my head, but I can say that the federal government could talk about enforcement of the Family Law Act. For B.C. it's the Family Law Act; in other provinces it's called other things.
Family law is meaningless without the means to enforce it, so it becomes a tool for the rich. Because it's a civil action in civil law, you can only enforce it if you can go to court, or if you can have a lawyer to enforce it. That's where the federal government has a direct role to play.