Address Information is pulled from account when creating sales order or invoice. We need to populate orders with contact address information.
No Payment Integration: When creating orders, we have to open authorize.net and reenter customers information.
Drop Shipping is our business and we have to enter the order twice. Immediately after entering an order we need to be able to automatically send the purchase order (multiple purchase orders if multiple vendor products on order) with the option to review before sending.
BTW, We have renamed Contacts module to Customers.