But it wouldnt make much sense for actual werewolves to come out of nowhere. Spectral werewolves make more sense to 'appear'.
If they just go *POOF* "We're here!" I agree, but that's not what I would have wanted in the first place. My system:
You're in combat and decide you need backup.
You howl for your comrades.
There's a few seconds when you're wondering whether or not it worked.
And then...
BAM!
Your fellow lycanthropes charge into the fray and help you wipe the floor with your enemies.
That's the system I'd like to see. One that makes if feel like you're part of a family, even if you aren't traveling with them 24/7, and that they're out there, doing their own thing, and respond upon hearing you call.
In effect, I wanted it to be like the Odahviing shout.