My excitement for a stylus extends to one use-case only: handwriting in calendar in full-month view, with space for notes in the side (perhaps using the multitasking shown). This alone will have me waiting in line for the iPad Pro.
Your iOS device will hold thumbnails. When you select an image it is downloaded from the cloud. There is an option to do this on your Mac too, but you can also choose to keep a full copy of all images in the Mac.
Yesterday I searched Google for a local funeral home. Two minutes later I did a search for a photograph. Google results came only from images of dead people from obituary websites. All I did was put in a name. Google, no one likes to FEEL watched. It was eerie and uncomfortable.