This program is absolutely excellent but I'd like to see a couple of tweaks personally as someone who wants to use both the Modern UI Start screen *and* Windows 7-style Start menu, depending on what I'm doing.
1. The top-left and bottom-left hot corners are disabled by default in Start8 so I cannot just hover over them with the mouse and switch from the desktop to the Start screen. I've worked around this by assigning the Windows key to switch to and from the Start menu but I'd prefer it if a space was inserted between the left-most edge of the screen and the first Quickbar icon (similar to the desktop/peek one on the right-hand side) so I could have all the functionality of Windows 8 with the convenience of the Start menu from Windows 7. When I was learning how to use Windows 8 originally, I was still accidentally clicking on the Internet Explorer icon in the Quickbar by mistake but it only took a few minutes to adapt. I'm confident that Start8 could work the same way, with the Start button in effect being where the Internet Explorer icon was originally.
2. The Start > Games menu (essentially Games Explorer) is set, as with my previous Windows 7 install, to list as a menu rather than a link but because I have a lot of games in there, around 100, it takes much longer to display its contents than it did on Windows 7, even taking into account that it is cached once it has been displayed once. It would be great if this could be fixed as I presume it has only been tested with much smaller numbers of games.
If those issues could be addressed then this software would be 100% perfect in my eyes.