Package Builder

Similar to the Custom Package Builder suggestion, but on the back end.

I have packages for several photo sessions, which may include the same products as others. I'd like a way to build packages from the products and services lists rather than writing content for each new package or when I modify or discontinue a product. In the latter cases, when I modify a product, I'd like the package to be updated automatically. For discontinued products, I'd like the product removed from all packages automatically.