Campaign ability to set a maximum threshold for product quantity or cart value, similar to how a minimum threshold can be set.
For example, they want to offer a percentage discount on a selection of 40 different products, but with specific limits: customers must purchase at least 5 items but no more than 10 or lets say a total value limit of x. If a customer adds more than 10 items, the discount should apply only to the 10 cheapest products in the cart.