You know, aside from the corruption and potential criminality of all of this it's provided an excuse (if they take it) to remind the public that Rudy was having an affair with his 3rd wife while living with his 2nd wife in the Mayor's residence. One would think that given the standard rules of such things they wouldn't need an excuse to bring this minor fact up, but there you go.
Even at the time Rudy's activities were downplayed everywhere but the New York press, with suggestions that his affair wasn't really an affair because his battle with prostate cancer made consummating the relationship impossible.
But it seems to me that while the "hide the money" system Rudy apparently used to keep things quiet is something to investigate, ultimately the "give your secret mistress a police car and police driver as a taxi" is pretty much the nail in the coffin anyway.