Something I’ve always wondered about was the strange lack of mouse control in the ubiquitous alt-tab dialog. (And for UI “dialog“s, should I be using the Canadian spelling, “dialogue?”). I know Windows and GNOME do not supply this feature, and I’m pretty sure KDE does not have it, either. I’m not sure about OSX, however. This seems such a glaring omission, and easily resolved. I’ve thought about getting my feet wet and doing it myself (for GNOME), but my GTK+ skills aren’t quite developed, yet.