More will be added here as people make suggestions, but two planned future additions (that is which will cost you more to have).  No price has yet been set, it will depend on development time.

ActiveX DLL interface.  This will allow you to program against the database to get data and alter some data.  Planned implementation is Summer 2006.

Custom switch lists.  Eventually, you will be able to request your own custom switch list appearance.  This will allow you to adhere to some prototype, or your own layout.  Planned implementation Spring 2006