I would love the ability to save a third party account so we don't have to paste over the account number and zip code every time. We do a lot of shipping that requires shipping on their accounts.
Also, we have employees in shipping that can't access that information and simply have to wait on a manager to print the label for them. A drop-down box with our saved third parties would help tremendously.
Then we could also set rules to default imports to certain third party accounts we have set up. I know FedEx ship manager has this functionality and possibly WorldShip so it would be great to have here.