Well I would say bring the Touch Bar to the Magic Keyboard, as well as the new Kaby Lake processors. Also reducing both the screen bezels, as well as the bottom bezels would be quite nice, allowing to have an even bigger display and allow a slimmer profile. Having some USB C ports would be nice too and even though this would be controversial, if Apple included only those ports and an SD Card reader it could help on urging the development of USB C accessories. A Space grey or matte black option would be pretty nice too.