I understand that they can't have a full length story for every Commination from the custom tags. However I think they could either nick some story plots from the scripted characters or come up with a few genetic ones to cover the ranges of custom characters. Then either have the tags determine your story or there is an NPC behind a tower towards the sea from the kitchen area who asks about your past, purpose, and future desire: this seems like a brilliant way to chose the story for vision characters, if it isn't already.