Much like a winning sports team, everyone wants to be part of a winner and nobody wants to be part of a loser. If there’s a perception that things are getting done in a political office, and that the office is rising to prominence, in a general sense people want to associate themselves with that. Maybe these staff departures have their particular reasons, and maybe they’re just climbs up the political ladder. The mayor of New York City or the Obama campaign or the New York Governor may be perceived as a step up from the New York Attorney General. I don’t know how Blake Zeff’s departure “to write about the presidential race” fits with that explanation, or all the lawyers leaving. But if the office was nailing corrupt actors left and right and gaining a reputation for toughness and accountability, I just don’t think this would be happening.