great observations
i don't actually have the game yet, but i've decided to get it wednesday and i noticed while i was watching some gameplay that the latest expansion has loads of sun/egyptian symbolism
trials of osiris - osiris - sun
adept weapons - adepts were priests in the ancient religions dedicated to the sun
there's loads of gear with these sun markings
the mask depicted there represents the egyptian god typhon 
who was the enemy of osiris
back in those days the priest that controlled the people considered themselves to be wolves and the people their sheep so from that we get "house of wolves"
there are various weapons with names like "eye of sol" or eye of the sun
and there are many many many more examples
as you've pointed out the symbolism extends all the way back through to the core game it just really jumped out at me now because of how overt it all is
its all lead me to conclude that whoever is writing the details for this game has obviously studied egypt and the religion they practiced
