LibAddonMenu-2.0: Dynamic Menu Options?

[katkat42]

Is there a way to get LibAddonMenu-2.0 to re-make your addon's options menu?

For example, if a player is not a vampire at addon load time, information about the vampire skill line is not available. So, it is impossible to add vampire-skill-related options to the menu. But if the player were to become a vampire during that play session, could the vampire skills menu options be added the next time the menu gets opened, or must the player reload the UI?

Does my question make sense?