Blaxploitation/kung-fu film, set in the crime-infested New York of the 70's. Think Power Man & Iron Fist as directed by Tarantino.
Also a modern day crime drama, taking cues from Heat, Payback, Ronin, GTA, The Wire, The Sopranos and about a million other sources. This will also be set in New York most likely but I envision it as a sandbox style game, so the group can get into whatever trouble they desire. Might evengive them multiple characters so we can switch of from crooks to cops occasionally.