Change ordering of alt-tab menu
The alt-tab menu in Windows 7 only sorts the first 6 or so windows by their z-ordering (most-recently-used). All other windows are roughly alphabetized, with some other strange rules applied. This means that checking several windows will push less-recently-used windows into an unpredictable place later in the list based on their names and other factors, while names aren't even visible in the alt-tab menu unless the window's icon is highlighted. Previous versions of Windows sorted exclusively by z-ordering, keeping recently used windows near the top where a user would expect them to be.
I realize this isn't a piece of the taskbar, but as it's closely related and also features major usability changes in Windows 7 (and that 7TT now offers ways to quickly bring up the alt-tab menu using the mouse), it seems reasonable to offer tweaks for it.