jep that's very strange i agree .
i don't use a FoB because i think for the first 20-30 turns bloodhunting in your capitol is unproductive and later you don't need it anymore .
teleporting him somewhere to bloodhunt is very inefficient for blood nations too i think because it has different research priorities
but vanheim should have a FoB because it needs one because it fits perfect in the mood of a blood nation. it would be a nice enchantment of the roleplay effect