Unity intercepts all key combinations using Super (Windows) key - please play nicely with Compiz instead

[Cefn]

Binary package hint: unity

In Compiz Config Settings Manager I can see the declared mapping to Super-W which triggers "Initiate Window Picker for All Windows", and I was trying to add another mapping of my own for "Initiate Window Picker for Window Group". However, if I want to restore the behaviour I had in Lucid and Maverick, I can't seem to choose my preferred keyboard shortcut, because Unity intercepts almost any use of Super, causing the launcher to be revealed instead.

Selecting Shift+Super+W or Super+E as the keyboard mapping for "Initiate Window Picker for Window Group" now does nothing, because Unity seems to intercept every use of the Super key. I consider this to be a bug which breaks Compiz Config Settings Manager. I don't see how the Compiz devs can override the Unity behaviour unless Unity changes the way it handles this. They have a very mature configuration panel which allows you to configure keys and detect conflicts between the demands made by different plugins. Unity seems to plain ignore it.

Presumably someone specified a manual workaround to allow Super+W to make it through to the Compiz Scale plugin . In advance of a fix in the way Unity intercepts keys, to play nicely with Compiz Config Settings Manager, can someone share with me where this was done, so I can add my own workaround so my preferred "Window Group" Scale behaviour can be triggered by my own Super-Key combination?

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: unity 3.8.14-0ubuntu1~natty1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
NonfreeKernelModules: wl
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
Date: Mon Jun 13 13:27:32 2011
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
ProcEnviron:
 LANGUAGE=en_GB:en
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)