First, on the issue of ratings, I've just assumed that Hemalurgic species are sort of "reset" and so don't take penalties from their spikes.
Second, congrats on original thinking! These Kanis are a very clever idea. Mind if I "borrow" them?
Third, I've invented a race called the Shuhr.
Shuhr (Deadly Threat)
Attributes: Physique 8, Charm 3, Wits 8
Standings: Resource 2, Influence 2, Spirit 4
Resiliences: Health 10, Reputation 5, Willpower 12
Traits: Vicious Fighter, Body Specialist, Shock Tactics.
Mimicry 4. Stunts: Durable Form 2, Chimera 3, Regenerate, Body Pocket, Partial Transformation.
Hemalurgy: Potency, Presence, Awareness
Equipment: Bones, 2 Glass Daggers (+2 Damage, touch/striking), Clothes, Animal Claws and Teeth (+1 Damage, touch/striking)
Jarvek, second-in-command of the Canton of Inquisition, has long dreamed of creating a new race. The Shuhr were his first success. Created, like kandra, from mistwraiths, Shuhr are some of the deadliest assassins in the world. Equipped with not one but three blessings, trained and pushed to the peak of their physical and mental capacity, and lacking a kandra's prohibition on killing, a Shuhr can easily cut down a dozen ordinary soldiers.
Luckily, less than a dozen of these weapons have been created, and Jarvek keeps them on a close leash.