I like that idea, actually. But a question: so if a seer scans an alpha werewolf, would he then see that "the person has the ability to kill, as well as the ability to infect a person"? Wouldn't that make it too obvious that the person is, indeed, an alpha werewolf?
yes, in this context both the alpha and the kamikaze would be correctly identified by the seer (while the mystic would only see them as 'evil'). but only for the ability to 'infect' or kill at lynching. I wouldn't include as a 'special' ability the wolf ability to kill, it is the normal condition of being a wolf (or a a vamp), so in this version the normal wolf and normal vamp wouldn't be seen by the seer as 'specials'.
do you want to make things even more complex for the seer? add 'the madman' a villager who has the same ability of the kamikaze wolf (the possibility to take one down with him when being lynched) only he is supposedly good. crazy, but good
I also like chrmjenkins variant