I like that except, I'd rather see Crotoa removed from tram menus and a zone made in the area between IP and Boomtown as a Casino coast, including riverboat casinos... with a featured special train station that connects Crotoa there and other possible future countryside zones... including the ability in the far future to have the connector to another city.
I was going to pull quote that "South and East" suggestion for the airport and second it. In the area South of Dark Astoria with northeast-southwest runways.
In my experience, cities that develop without a major Int'l airport near the center often put them in the boonies. When I was a kid, the ride to Dulles felt like an eternity, so if the Airport was a zone where I just suggested, it would make a nice backstop. And later, like the train station above, People could fly to other cities...
I'd love to see the cape on the east side of the bay turn into something, AND
I am totally in favor of a train yard at the center of a zone west of Independence Port, also with a second train station to the countryside.