The Calendar Notoriety Grab Bag still gives a notoriety boost to one of the Nightmare Tide factions. As others have pointed out, that often results in no boost if your character is max notoriety level in even one NT faction.

A better reward would be to simply give a Sigil of Valor as the grab bag reward so it could be used for any faction.

If that can't be done then how about give a 5 platinum reward if the character is already at max notoriety for the NT faction of the day?