Comment 3 for bug 703411

+1 for this to apply to all windows, not just maximised. Then one can repeatedly click the top panel, without moving the mouse, to cycle through all windows. This is much better than having to move the mouse to each title bar one at a time. It would also seem to satisfy Mark Shuttleworth's comment above:
"I confirm that the unused (non-menu, non-indicator) space should behave as a proxy for the titlebar"