The Director of the friggin’ CIA cannot under any circumstances leave himself open to charges that he may be vulnerable to blackmail. He has no choice but to quit.
Nobody rotates their Intel leadership upon a new election. Too many other positions of power are rotating and the leadership needs reliable timely intel when reforming their teams.
IMHO, there is an outside timetable driving events. Track the events and record the timelines for planned, preplanned, branch and sequal operations. A 4 year timeline may have just been initiated. Observe what happens (decision points) in 15, 30, 45, 60 and 90 day increments.
IMHO Petraeus won’t talk, so he doesn’t end up like Colby.