I think they should be tense or something if people they don't know well see them in werewolf form when they're at the lower end of their rank/skill. Of course, heightened senses (sniffing out collectibles), some degree of resilience (werewolf form should protect from cold with Seasons and the fact they have fur from getting sunburnt with IL), ability to eat raw meat/fish, super strength and endurance (able to work out longer than normal sims, possibly without limitations as elders). In the lower ranks, they could get stronger negative moods. They should also get some form of 'pack instincts' in form of stronger creation of relationships - whether meaning the 'real' pack (other werewolves) or family members.
