Apple is clearly bringing the best parts of the iPad to the Mac, but how about bring iOS some of the best parts of OS X as well?
Yesterday Apple released the OS X 10.8 Mountain Lion developers preview, and like OS X 10.7 Lion before it, front and center was a drive to take what worked best in iOS in general, and the iPad in specific back to the Mac. To make an Apple experience that's more consistent across their two platforms.
But how about a little quid pro quo? There are several aspects of OS X, including some of what's being implemented in Mountain Lion, that I'd love to see in iOS 6.