The Sims 4: Werewolves Review (Lillium)
This is the best iteration of Werewolves in the Sims series, and has been a wonderful experience. However, it is not flawless. Compared to other Game Packs, I will rate Werewolves as high priority pack if you like Supernatural / Occult Sims, however it is behind Realm of Magic and Vampires because it has more inherent glitches.
For the positives!
The Werewolf ability tree is incredible, and a solid improvement over the Vampire tree. Leveling up as a werewolf feels very natural. The abilities are fun, and impressively well themed to werewolves. It has a repeating top level trait to turn excess points into satisfaction points so your points never become worthless. The wolf temperaments (drawbacks, like vampire weaknesses) work a bit like Spellcasters' curses, and can eventually be turned into strong buffs instead of negatives.
Werewolf toddlers and children can howl, which is THE CUTEST!! The social aspects of being a werewolf are well integrated to feel very natural, while making it a very important part of being a werewolf. Even if you do not have your werewolf join one of the wolf packs, it does feel aptly important for your wolf to have and interact with friends and family. Werewolf families are possibly the most wholesome thing in this game - and Sims is not short on feel good, wholesome features.
And the bad news...
The werewolf packs (Wildfangs and Moonwood Collective) do not repopulate if the NPCs in them die, and can become broken if this happens. The wolf packs are also exceedingly repetitive in gameplay, so while the first time through one is fun, it is tedious to stay in one for a long game or to play with them again with other Sims. They also have no options to make them less demanding, or even tailored to what you would prefer at all. It is difficult to ignore the packs entirely, because some of the very helpful wolf traits are tied to the wolf packs.
Werewolves have a "Fated Mate" system, that selects one semi-random other werewolf as the "destined" romantic partner for that Sim. Doing any romantic interaction from that point on with ANY Sim other than the one designated other Sim, will give your Sim a massive Tense debuff that lasts quite a while. A Fated Mate can not be removed once set through gameplay, and cheats can fail to remove it as well. The only way to reliably remove it is with mods, and it is still a huge hassle. The Fated Mate can trigger VERY inappropriately, on toddlers, elders, family members, and does not respect Sim gender/romance preferences at all. EA has been struggling to correct this, and has partially patched it (especially concerning toddlers), but mostly they have just been struggling as this is still happening.
Speaking of toddlers, exporting a werewolf toddler (to the gallery or saving them to your library) is extremely buggy. They will not show up in the preview, and if you click on their individual preview the game will 100% of the time error out and need to be force quit. You do not get to save first. They do export (and import elsewhere) fine, but you can not select them in the preview. The response from EA about this bug has been underwhelming, a fix feels unlikely at the time of writing this.
Last, and imo least, the werewolf form design has been heavily criticized by a lot of people. I do not find it off putting like the Sims 2 or Sims 3 ugly werewolves, however my screenshots of these werewolves sent to friends who do not play Sims are invariably met the first time with an inquiry about at best the "Cat Person" or worst the "Furry". (And they are overwhelmingly towards the worst end of that.) While I think the design isn't too bad, almost no one else that I know likes it.