Not sure yours qualifies as a logical, emotionless post but if we're going to try and make this all about a few key execs and a dead man, I've been moving towards this opinion:
With Jobs' passing, I think design was handed to Ive and the business to Cook the way it would be in a more traditional company.
Ive is a great designer, but he really benefitted from Jobs challenging him and I think Jobs became the only one who could. I'm guessing he wasn't made CEO because he either wasn't interested in, or capable of, running a business.
I think Cook is a fine CEO in the traditional sense, but Apple's culture was built around Jobs being in everybody's business. I think Cook takes the more divisional approach.
Ive, much like George Lucas, is great at the idea generation and at execution, but needs someone in the meeting to act as a filter in between those stages. When Lucas started the prequels, he really needed someone with the guts and stature to say, "George, I love you, but that's some crazy sh*t you just said out loud." I think Ive needs the same-- but he needs someone to curb his minimalism where Lucas needed someone to curb his excess.