I’m glad you can see it. And McCain, in particular, needs the young backup more than anyone in recent history [IMHO] but I can still see Colin for his expertise [as Condi’s] in matters of state.
One thing against Powell is this. I have it on very good authority that his wife, Alma, does NOT want him returning to public office/ campaigning. She didn’t want him to serve as W’s first SecState as it was.