[Gantz]

The issue with a Manhattan casino is that to have a good casino you need big floorplates, and that would be a hard site to find in Manhattan. Something in Times Sq or Herald Sq would be fairly small and crappy. Even the current Resorts World in Queens is fairly "meh", even though I hear they are making tons of money.
I am also surprised none of the official proposals are floating Coney Island, I think it would be a great spot there as well.