I have a werewolf who is fated mates with a spellcaster. They were both werewolves at the time and became fated mates. She was cured and became a spellcaster but the fated mates moodlet still shows up. I like that it's still there. I agree it would be nice if werewolves could get it with other sims right away.
As for fur colours I am a little confused. You can pick from a selection of preset colours and if you don't like that you can paint with a colour wheel so all colours are possible. Werewolf tails would be a great addition. I wouldn't mind some clipping with furniture.
The only werewolf idea I could add would be the option of a feminine shaped body frame. The werewolves are so humanoid in posture and movement (when not running) it seems fitting. In all other options this game tries to be as inclusive as possible when it comes to gender options, why not allow female werewolves to have a feminine form.