Now Is The Right Time to Introduce Customizable Life Span

We already have the ability to age children up when ever we feel like it without having to use cheats. What would life span customization add to that? I almost never wait until birthdays to age up infants, toddlers or children. When the teen years were the same length as the child years I would sometimes allow teens to age up on their birthday, depending on their story. Since the base game update for HSY, I now always age up teens well in advance.