Hey people! Cool beans.

[@Sonatina]
Excellent Questions!

Question Number 1
Everybody is going to be tasked with making two sheets one for your human and the other for their corresponding monster. The intent being as a pair they are supposed to mirror one another, the Levithan despite being a Lovecraftian horror serves as a representative of your character's more primal insticts. Their other monster inside if you may. 

Question #2
I'd say more general atmosphere than anything else. I have this idea of very scary monster placed against a crumbling Art Deco scene if that makes any sense. And the pureblooded humans within the confines of their city's definitely reflect this with their dress being mostly sharp suits for the man and elegant dresses for the ladies. Though the rest of the world is drastically different, bleak and barren like the picture above. But they try to hide from that fact as their soldiers by truckloads everyday with their extravagant balls and other parties.

 Technology well is going to be different due to the fact that arcane magic superseded diesel but it's very similar. The eaiset way I could describe it would be very [url=http://tvtropes.org/pmwiki/pmwiki.php/Main/DieselPunk]diselpunk[/url] from a technological aesthetic. Like the giant sub in Atlantis the lost Empire. But following the same general pattern of technological advancement (no supersonic jets or anything) so automobiles, trains, aeroplanes, and zepplins are the go to forms of transportation in the Republic while everywhere else either use horses or thier feet for the most part. Mostly because it's convenient and human technology has a bad tendency to draw unwanted attention in the eild

Though really it all depends on how we as players end up shaping things. The main reason I picked the dawn of the 20th century was less the feeling of the time but what it meant. A convergence of global ideas and thinking. The conglux of old and new, alien and benign. Since that is a lot of what Old Gods is about.