I'd like to voice my opinions on a couple of cities.
Chicago: Major city now, feral city then. From what I have gathered about the city, its overgrown with a jungle like theme going on. It would be interesting to see a 'native' vs. outsider take on the city where we may be trying to take back the city while others may like it.
New Orleans: For some reason, my mind keeps coming back to this city. Its got smugglers, pirates, military presence, voodoo, christianity, blood magic, regular magic and plenty of trips to the Carribean. We can get several different types of groups going on, like some that focus on smuggling, others on protection details and so on and so forth. It be fun to add a little bit of cajun to this.
Dublin: I don't know much on how Ireland fairs in the series, but what I gather the elves took over London and a friend told me he thinks they are under English rule now. So we get the story straight and have ourselves some fun either making a newly independent Ireland, keeping it free from English control or trying to get in under English control.
Moscow: Wanna be a Ruskie?
Anchorage: At the edge of the world, there are little to no laws and lot of sites where research are done. Plenty of treasure to plunder, if you can survive the environment, the natural wildlife and the severely deadly metas.
Then an idea I have toyed around with for a while and could be of some use here, I've thought about getting a game together with some friends where the starting epilogue showcases the top ten becoming the top nine. Essentially one of the top ten stuck out its neck to far and got its head cut off. The Players would then be working in most cases companies trying to get that coveted 10th spot or be hired to make sure the nine stay just nine. With this, each GM could get a couple of companies built on some ideals and let the players choose which they wish to help bring up. For that, the st's could choose separate cities to play in and build the companies that fit in the areas. But thats an idea that you guys can take or leave.