Comment 3 for bug 392947

Jason has a hotseating branch that would be perfect for this. Basically the icon group would hotseat, showing an icon for every window. These icons would allow Compiz window previews as well.

The nice thing with the hotseating is that you can also manage the windows individually (minimize/restore/close/etc).

I'm not certain if you can get scroll events during a drag, but that might also be reasonable (and if its possible, simple).