Inspired by PopBar, this mod integrates the fundamental aspect of PopBar into the menu bar itself, toggleable between the Bag Buttons and 2 extra rows of buttons. The following is what the toolbar looks like normally. Notice that I've actually swapped the positions of the Latency Bar and the MenuMicroButtons.

Hovering the mouse over the Latency Bar, I've bounded Latency Bar to be clickable (in the picture, I've bounded it to "Y") on to toggle between the Menu and IPopBar.

Click! The menu bar and bag buttons are now replaced by IPopBar! It displays 11 icons hotkeys that are boundable in the Key Bindings.

Hovering the mouse over the IPopBar (bottom, Row 1) will cause an additional row of toolbar to appear. Over here, my mouse is on the Tauren War Stomp ability.

Installations instructions and downloads is available at http://ui.worldofwar.net/ui.php?id=370.