As a user, I want to schedule price increases. Consider the following example: My customer is on plan A, whose standard price is $1,000 per year. However, we have negotiated several discounts: 50% discount for the first year (i.e. total cost of $500); 25% discount for the second year (i.e. total cost of $750); and No discount afterwards (i.e. full price). I currently need to apply the first coupon and then wait until the end of the first year to apply the second one. It would be much more convenient if I could schedule ramp-ups when creating the subscription in the first place.