Membranophonist’s Ramblings

Try this sequence:

1. While any given application is frontmost with at least one window open, activate the Application Windows Exposé mode (F10 by default).
2. Click on the Dock icon of another open application.
3. Notice that you exit Exposé but remain in the first application.

It would make more sense for the Dock to act similarly to how the ?Tab switcher works in conjunction with Exposé, tiling the open windows of single applications as they are selected in the Dock until a window is chosen. Individual application windows could also be tiled if the user triggered All Windows mode and then clicked on an application in the Dock. Clicking on an application that wasn’t already open would launch it in the foreground and exit Exposé.

These features would be unavailable to users who hide their Dock unless Apple changed how hiding works while Exposé is active.