If we're using the painting metaphor, its the small, careful and loving strokes that create the painting.
What I meant was, you'd expect displays to get clearer, chips to get faster, ram to increase. Those are inevitable updates that go without saying.
Coming out with the iPad was a broad stroke. The iPhone, another broad stroke. When you give your imagination even 5 minutes to think about it, there are so many obvious broad strokes left, even just utilizing Apples existing technology, that it's hard to get ecstatic about a slightly clearer display.
This being the year of Steves passing, they could really use one.