Manage Metadata is great, but editing Favorites still requires editing the XML file and restarting the Server. Why not allow people to manage Favorites in the Studio. It would be nice when you edit it, for it to show All fields and allow you to check boxes for the ones you want to be included.
If you have certain fields that need to be filled in ever time you add a Player, Favorites would be the best place to put them.
OK, the arrow on the Add button to find the New/Existing option is really subtle. It is in the User Guide. May I suggest you post a new KB to replace KB-333, that would be helpful.