I stink at making mods, but you can use this idia if you want.
The idia is simple:
It's just like the Vampire Embrace mod just for werewolves...
If you played the VE mod then you will understend.
But if not... It's like this: if you go around as a werewolf and bite someone they olso turn into werewolves and attack citys or something like that...
This is hard to acomplish but i think its possible, and the result would be interesting