To me personally, everything that comes out other than Witches is a bonus. All I am waiting for in Sims 4 is Witches.
If they don't do anything else after that, it's sad but well, it is what it is. If they do, that's great!
I chose Werewolves because that would complete the big 3. Vampires, Witches, and Werewolves are the big 3, and having all of them would make the game feel finally complete for me.
Witches are the most important one for me, even before Vampires.
I'd take any other occult too when Witches are here, but out of all occults I can think of, Werewolves is the one that would get me hyped the most TBH.
But as long as there are no Witches, don't bother me with Werewolves.