i've been waiting for the new spotlight. searching with NOT and OR would be so helpful. also, the author writes how spotlight highlights "show all" and requires the user to use the arrow keys or use the mouse to select the desired application to launch it. but all you have to do is press command and then return to do the same thing. still, i'm all for improvement, however slight it may be.
If by any chance you are Online ADC members, you can see a video from the last WWDC where they go into some more detail on Spotlight. Looks pretty good to me.