1.price and discount are fixed boxes where a seller cant change price or discount.This are fixed in item inventory were you define price.
2.Discount can be placed in sales kits as this way it will be more usefull as you could offer specific package of goods in a discount price.
3.Discounts can be also applyied in the form of codes were this can be entered.
4.Branches could be determined and then can be choosed when entering a new customer so you dont need to type exactly the same.

This is some of my hopes that someday may there are in the FA.