É possível!
Confira 7 Tweaker da barra de tarefas :
Features:
- Show standard window menu on right click instead of jump list.
- Close or focus a window on middle click instead of running a new instance.
- Disable grouping of windows by file path or application id.
- Cycle through windows of a grouped button on left click instead of showing a thumbnails preview.
- Open with while dropping a file on a taskbar button instead of pinning.
- Disable thumbnail previews.
É incrível; Não consigo mais usar o Windows 7 sem isso, especialmente no meu tablet PC.