Werewolf probably has an origin somewhere in Nordic myths as for the defenition Tolkien was using it for. Like Fenrir etc.

Not the modern Werewolf.

Just from a personal aspect, I dont mind sprinkles of variety in the lcg that add interest to the game, arent specifically mentioned in tolkiens works but close enough in theme to be realistic in his setting.

I know many others wouldnt share this view, but thats my thoughts. Do im happy with the werewolf

I agree.