I'm running Windows 7 RTM and while I do like Windows 7 I find that some of the "pretty" reduces usability. Specifically, I find the thumbnails in the Alt + Tab task switch UI and the thumbnail previews accessed from the taskbar to be completely useless. They would have to be several times larger to be useful and even then the usability would be less than in Windows XP. I cannot overstate my preference for the "application icon + window title" model that Windows 7 displays when I access it via Remote Desktop. I know the kids think this stuff is "cool", but I've got work to do :-)
The only options I've found for configuring this is the Group Policy editor, and that gets reset when I restart Windows. Does anyone know of a better way to configure this?