I would like more supernaturals, but some of them could still be unlocked in world packs. You could find bigfoot from an outdoor pack, a yeti while visiting a ski lodge, a medusa in a temple ruin, or a kitsune in a Japanese tea house; then bring them home with you.
The way they did Vampires and Realm of Magic makes sense to me as separate packs in a way that a separate pack for werewolves would not.
If they decided that Fairies would be a pack, it should include mystical pets and locations. Maybe have a house you must grow and form like a bonsai tree or a mushroom house that you must constantly remove pieces so it maintains its shape. Houses could be intelligent with their own traits and change in a way that conflicts with your sim: you could train it or fight with it. Cars could be replaced by pumpkin carriages, dragons, and centaurs. Add Satyrs and Rock Trolls as playable characters. Create illusions to look like other characters. Have more fairy wing options like bee, dragonfly, butterfly, or moth versions - perhaps just bird wings like raven, dove, or parrot.
