Here's something that I would like to see, that I think would be a funky UI 'enhancement.'

I would like the app launcher as a full-page 'widget'. This would eliminate the need to go to a different window to access apps. The user would just have to select the appropriate screen. Along the bottom of this app-selection desktop screen, there would be recently opened apps, which would double as a task manager.

On the bottom of the launcher window, there would be convenience buttons, much like there is now, but clicking the 'Home' would slide to the view screen containing the app selector, rather than popping open a new window.

The change is minimal, but I think it would look quite nice and be very intuitive. Additionally, it would allow for the modularization of the app selector as its just a widget -- many styles could be selected from -- and provide another point of manufacturer differentiation.