Basically what I want is Unity's task switcher (I know, everyone hates it, but for me it is almost exactly how I like it), KDE's system settings, and xfce's eve

Basically what I want is Unity's task switcher (I know, everyone hates it, but for me it is almost exactly how I like it), KDE's system settings, and xfce's everything else (except Thunar; but using Nautilus under xfce is easy enough).