I suggest ...
Ability to create orders
Add functions to create orders right in OrdersPoint - in case of phone order or so
ebXML support?
ebXML (Electronic Business using eXtensible Markup Language), is a modular suite of specifications that enables enterprises of any size and in any geographical location to conduct business over the Internet. Using ebXML, companies now have a standard method to exchange business messages, conduct trading relationships, communicate data in common terms and define and register business processes.
xCBL support
The XML Common Business Library (xCBL) is a set of XML building blocks and a document framework that allows the creation of robust, reusable, XML documents to facilitate global trading. It essentially serves one language that all participants in e-commerce can understand. This interoperability allows businesses everywhere to easily exchange documents for e-commerce, giving global access to buyers, suppliers, and providers of business services.
Support automated inventory synchronization from supplier to store automatically
When product become available/disappear or out of stock - this will automatically do same in store.
Prevents products ordering when they are not available.