Comment 4 for bug 1118309

As they're currently set up, alt-tab's design seems to assume the user will slowly switch between alt-tab windows, with the transitions making the previewing a less jarring experience. In practice, however, most users alt-tab very rapidly. When used like this, the transitions try to fade-in every window immediately upon tabbing, create a flashing effect that's very distracting and unpleasant.

Windows 7 solved this by displaying the window list immediately, with the window preview fading in if the user stays on a window list entry for about a second. In other words, a delay before the window preview is shown.

I'm not sure this solution will work well here though, since Win7's alt-tab window list appears in the center of the screen, and elementary's replaces the dock. It may simply confuse users?