And you want PCs of these?

As far as a "Strong Leader advantage", have you considered that there would be two separate templates, or a lens for the "pack leader", and have the normal template have a disadvantage instead? Fanaticism to the local pack leader, and maybe a more difficult self-control check on that.

Then the "Strong Leader advantage" that you want, is instead a lens that costs an amount to drop the Fanaticism, and whatever other changes you see fit.

...

Another thing, that -2 IQ makes them almost unplayable (in a low point game) by itself, unless this will be a heavy combat game. In a high point game, a smart player would buy that off first thing. Try instead figuring out why they would appear to be less intelligent, and giving them disadvantages to represent that. Innumerate, Dyslexia, and Oblivious are good, individually for extreme cases, though it would be cruel to match them up. No Sense of Humor, Racial Fanaticism, and Gullible, make for lesser cases, or all three together for a brand new outlook on life...