I heard someone randomly say that they should replace Tim Cook with Scott Forstall. I chuckled at the idea but this might be a great idea.

Fadell might also be a good choice. Either way it should be someone currently outside Apple. The company needs an external eye to review its processes and cruft that built up under Cook (nothing negative against the guy, but what worked 5-10 years ago won’t necessarily work 5-10 years down the road).