a couple things about things that involve shadow damage. first of all, there are only three 5* swords that deal shadow damage, one of which is obtained by means of events. I think there should be more shadow damage swords. a shadow cutter alchemy line would be cool.
the other thing about shadow has to do with events. 'shroud of the apocrea', 'march of the tortodrones' and 'Kataclysmic Confrontation', probably SK's 3 best events, all include shadow monsters far more than elemental or piercing monsters. I think there should be an event that focuses mostly on the beast family, i feel they aren't incorporated into the game enough.
also, i wish i were a werewolver
But Blitz needle.