First of all, I don't run Compiz because I see it as no more than a resource-wasting annoyance. Sure, it looks cool, but it doesn't help me with productivity in any way. Secondly, I keep multiple windows open at all times, so I rarely see my desktop and it was good to see that GNOME shell includes a window switcher which can be accessed with the traditional Alt+Tab hotkeys. Finally, my system isn't a high-end system. I build my computers because it allows me to pick and choose hardware that I already know works with GNU/Linux. GNU/Linux, if you know what you're doing, doesn't need the latest and greatest hardware.