Not to Hijack this but one thing I dont understand is this:

I never really got the humans being conduits for primals thing.

So follow me here

Primals are beings that are created out of many many prayers of people/beastmen/dragons/etc. that then react to a large quantity of ather crystals which then create the manefestation of said primal.

So people like Shiva and the Archbishop.....how again can then use their own bodies as vessals? Do they take the place of crystals in that equation? So intsead of Prayers + Ather Crystals = Primal

its

Prayers + Lots of ather (i.e. dragon eye) + Body = Primal?

ALSO

How does that white auracite work again? I know you trap and Acian soul in it and then break it...but WHY does it work? What makes that different than just kills the physical body host? (I know this is pre heavensward stuff but I forget and cant find the explainations on the web)