The only reason I'd be okay (not happy, but okay) with Werewolves not having as robust as perk tree as Spellcasters (let alone Vampires) is that there's not a whole lot of variation in abilities for Werewolves across folklore. Some, yes, but not the same variety as Vampires, spellcasters (witches/wizards/sorcerers, etc) or Faerie like creatures (most cultures have some sort of "doesn't follow the norms of culture behavior" nature spirit.) So for a fully robust perk tree, they'd have to create their own folklore about Werewolves - which, admittedly, wouldn't be a bad thing.
I want werewolves and Faeries because I want the complete "Classic 5" supernatural creatures (spirits from beyond, Undead predator, human that takes beast form, human that can break the laws of nature with potions/spells/will, semi-capricious nature spirit that operates by "alien" rules of behavior) that appear in the bulk of world cultures.
I'd expect Werewolves to be good at finding things, fighting things, and add a lunar cycle. If they come with a built-in enmity towards Vampires, that's a bonus.
I want Faeries that are like the ones from Celtic Folklore - Can be benign or malign depending on how they're treated and their nature, operates with a strict code of honor and hospitality that doesn't always make sense to humans, come in a variety of shapes and sizes and abilities. (Watch Maleficent. They did an excellent take on Classic Faerie in that movie, possibly by accident.)
What we're probably going to get are capricious winged humanoid tricksters who can shrink down to live in miniature houses. Which, while not as varied as I'd like, will be a suitable limitation.