-A non full screen Start menu.
-Aero
-Dual pane explorer, like total commander.
-Ability to disable metro completely including alt+tab and notifications.
-Redsign of the control panel to make it more stream lined.
-A less user friendly approach, majority of people know how to work a pc these days, target market is no longer people that have never used a pc before.
-A power user mode where you can turn off all the annoying crap like action center and similar.
-more taskbar features similar to the features that taskbar tweaker brings.
-more alt+tab features similar to the features vista switcher brings.
-Option to remove jump lists completely
-A full operating system proxy that supports socks like proxifier.
-Make the login screen, start orb and windows themes configuable by default without third party applications like, start orb changer, windows logon changer, uxtheme hack etc.
-Bring back the windows xp file type dialog in folder options or better, make a better one.
I could probably think of more, given enough time.
How many of those will be in windows 9? probably none. But worth mentioning anyway.
How will windows 9 look? think Metro but without the windows 7 element and add less functionality and more annoying notifications and more cloud based integration.