Werewolf-Vampire Hybrid

It would be super cool if they made hybrids an actual feature but that would get awfully complicated and difficult to make work for Sims probably.... especially with just how many combinations there would be and if where in the family tree this or that occult is would effect anything (as in like would the be a difference between a Sim who's mother is the daughter of a werewolf and vampire and father the son of a mermaid and spellcaster compared to a Sim who's mother is the daughter of a spellcaster and vampire and father the son of a mermaid and a werewolf.... and would percentage of each impact how much they take after that occult.... like would a Sim that's 20% alien, 40% mermaid, and 40% vampire be different from a Sim that's 40% alien, 30% alien, and 30% vampire? Ack, now my brain hurts!)