Some of the choicest municipal-patronage plums used to be with the city's old Marine and Aviation agency. It controlled leases at the city's docks and terminals, and its jobs always went to clubhouse loyalists who were charged with divvying up the spoils. Unfortunately, this task often led them afoul of the law, the wiseguys, or both. In 1983, city leasing director Rick Mazzeo wound up dead in the trunk of a car in Greenpoint after the Bonanno crime family became disappointed with his attitude about an ongoing investigation. That kind of nasty affair is thankfully ancient history. We long ago traded political hacks for business-school grads who bring to their jobs, if not exactly a sense of civic duty, at least an intense commitment to being able to brag that they drove the hardest bargain. Above all else, the Bloomberg administration has claimed to stand for business conducted by the book and the bottom line. OK, occasionally a choice perk like a luxury stadium suite gets tucked into the deal for the enjoyment of these hard-driving negotiators.