I wish KDE in future can accept Super/Win key to open menu like in Unity and GNOME Shell, because this simple feature is the only one I impressed from Unity and GNOME Shell rather than KDE. Please add this feature for next KDE version so I can enjoy KDE much more than Unity. I like KDE but the only one I hate from it is only this: KDE can't accept Super key as menu opener. I hope my wish is useful and never makes you angry, Mr/Mrs KDE Developer. Thank you.
*** This bug has been marked as a duplicate of bug 154564 ***