Scranton Peninsula is a poor choice for two reasons:
One being that there is not good road infrastructure to deliver the traffic. Traffic would have cross active lift bridges and meander on two lane roads to get there. From any direction, there is no simple path without zig-zagging down narrow roads after exiting the highways. I suppose that's why a pedestrian bridge would be necessary, but I imagine that the traffic through Tremont and Ohio City would have to increase and back up just to staff the place. It is unlikely people would pay downtown parking fees for a casino on the west side with closer parking options. Parts of the flats not owned by the Gilbert plan could likely be turned into surface lots relatively cheaply. It is not unlikely that the owners of those parcels would try to cash in that way instead of building more business ventures. It is hard for me to envision more than a sterile, if not gaudy, building protruding out on the peninsula, surrounded by seas of cars with--as is the case with other casino ventures--no visible signs of life on foot.
The second being that the peninsula as it currently stands on average about 5 feet above the water line and is squarely in the 500 year flood plane. The last major flood was in 1913 and it wiped out just about everything. Prior to 1913, there were homes dotted throughout the lowest parts of the flats, but not anymore. The tables that have the peninsula placed in the 500 year flood range were set before the forest and swamps of the Cuyahoga basin were developed into "well draining" strip malls and cul-de-sacs. Tack on the current climate models of more heavy, infrequent rainfall in the Great Lakes and building there seems to be a fools venture--or better yet--a real gamble.