We have a client doing a lot of order management in Magento, and trying to multi address checkout is annoying. Well, for the admin and Magento it doesn't exist. You have to keep placing new orders. This means asking for credit card information over and over again.
I would think that creating a multi address admin checkout would probably be a huge undertaking and probably not recommended. I am also looking into possibly using the Authorize.net CIM module for saved credit cards to get over the asking of information over and over again. However, I am just checking to see if there is anything I am missing or if there are any extensions out there to make this process more streamlined?