Trying to sell a friend on Now and Gold with Baptist Gold as a possible starter, I was kind of frustrated.
He currently has Baptist starter from 5 or 6, so he has a few books and features. But since he does not have Now, I am unable to show him what he would save by dropping the feature package. The painstaking process to find your approximate dynamic price for one package after another is well known.
Solution: A What if? tool, where you can select items on your wishlist and "buy" them, then see all of your resources (I hope the base package pages are automatically generated) and your cost for each.
It would also let someone test if a collection is dynamically priced, without laying down money and reduce the strain on sales staff of trying different permutations.