I've been testing the next release of the "unnamed proprietary operating system" in question, and I have to say that a great deal of the eye candy goes a long way to making things easier. Getting a live preview of a window if you hover over its taskbar button or flip between windows is a nice feature, as I constantly have a ton of windows open in the same app. Being able to move a window around without spiking the CPU to 60%+ is another subtle but nice benefit. In my testing of this release I've found that the UI is more responsive and smooth when the compositor is active versus when I have it switched off. This is on a 945 chipset's integrated graphics, too - you don't need a GeForce 7800GTXOMGBBQ in order to run the new UI smoothly.