I just saw the trailer of this and I have to say it looks pretty good. Though I would prefer to have a city under the sea than a floating city to explore. But I have high hopes for this. I only wish that it continued right after Bioshock 1 after you defeat Frank Fontaine.
I thought it was a very interesting trailer, but how did the Big Daddy from Rapture get from the '50s all the way to 1907 (did some background research). Apparently, the 2 societies (Rapture and this foreign one) are 2 polar opposites: Rapture:"bring us your poor and oppressed" Floating place:" Bring not your filth"
I think this is referring to the massive numbers of immigrants back then and the ultra-conservatives/nationalists literally making their own city and rules above the United States, probably in the Midwest somewhere... Idk I hope this helped.