That tension - which is coming to a head as the public process to award a $500 million-plus license gets underway - is opening the door for a gaming facility across the East River, where the owner of the Mets is angling to build a casino on the stadium parking lot in Queens. But the real estate honchos promising pomp and circumstance - namely, Related Companies at Hudson Yards and SL Green in Times Square - have to overcome something their money can’t buy: A handful of local politicians who not only don’t care about the flashy proposals, but are turned off by Manhattan’s years-long transformation into a playground for the rich.