Here is a list of creatures they should include in future expansion packs: Aliens Genies Bigfoot Witches/Warlocks Werewolves Plantsims Mermaids Angels Demons Fairies Elves Goblins Zombies Franksims Pixies Maenads Sims who can turn into a beast, similar to Dr. Jekyll and Mr. Hyde
I think they should include a variety of animals in the Sims 3 unleashed like: sharks, panthers, monkeys, elephants, alligators, lions, tigers, and bears. The Oh My Edition!
I think maybe its two life states: Frankensims and Fairies. Which would be an cool edition to the series. They should add Aliens and Genies too though.
I think the imaginary friends are fairies. Since only children can see them and popular belief shows that children can only see them because of imagination while adults stop believing in magical beings.