Looking at the products it is hard to see where Cook has made his impression. It feels like it is about refinement and improvements year after year. That isn't a bad thing, because over time those things add up, and Apple is probably a much more well-oil and stable machine behind the facade today than 10 years ago. This is what Cook does (even before he became CEO).
I suspect Cook also knows that this is his strength, and that's where he should focus, but I would like to see something more risky and exciting come out from Apple.
Personally, I'm OK with that. But I've never really stayed abreast of the latest trends, anyway. I can also see where people who enjoyed the excitement of those famous "one more thing" moments might feel like some of the magic has been lost.
We will need a new product category to put that to rest.