In terms of Gates, we do not know yet, for another 70 days, Gates has to serve GWB, largely transparent to the General Public is what backdoor conversations are going on between Obama, Gates, and Petraeus.
As it is now, the only semi honesty we get out of our military are from folks that are safely retired, The era of Rumsfeld and GWB has cast a chilling pall over our own military and its ability to freedom or honesty of speech within the services. The military is acutely aware of the fact it needs public support, their reputation was in the sewer for a decade after Vietnam, they preformed brilliantly in Gulf war One while rehabilitating themselves in the public eye, and now caught between a rock and hard place, our military is failing badly in Iraq and Afghanistan, not because the military is incompetent, but because GWB is incompetent. And it not Rocket science to predict the military desperately does not want to be made into the scapegoat again.
If nothing else, Gates has been infinitely better than Rumsfeld, and while I too have mixed feelings about Gates, keeping Gates while sending an Obama message of resumption of free speech within the military, may be the morale boosting signal our military is waiting for. That and the Powell support of Obama can send positive winds of change blowing, and the sooner the better. Our military has really be raped under GWB, and they need not only a hug, but they need some relief.