Since you can't have werewolves without the moon, I'm almost certain that there will be some kind of moon-related gameplay. Not so certain, but still hopeful that the moon will affect things other than werewolves as well. I imagine a new trait that gives sims, regardless of occult status, a deep connection with the moon (let's call it Luna-tic), with all the benefits and disadvantages that come with that, such as faster skill gain during certain moon phases, sleepless nights during others, etc.
I also see some potential for cross-pack compatibility, for example with Cats & Dogs. It's one thing if pets don't really care that there's a new cow or a chicken in the yard, but there absolutely has to be some meaningful interaction between dogs and werewolves. Maybe one possibility to find out if someone else is a werewolf could be to ask a dog to sniff them out or something. (In hindsight, it would have been cool if cats could do the same thing with merfolk, given that they eat fish, but... Wait. I might want to actually try that before I claim that it isn't in the game.)
And last but not least, it would be nice if children weren't completely ignored again, but given the more brutal nature of werewolves compared to other occults such as spellcasters or merfolk (which excluded children, too), I won't get my hopes up. That's not to say I want werewolves to be all cute and cuddly; an option to make them that way would be appreciated, just like we can make perfectly harmless vegetarian vampires, but please, let us have some dark and dangerous stuff, too, at least this once!
