After all the great comments and suggestions from the last update and talking with Matthew Paul Thomas, my student Tomé Vardasca, has been redesigning the UI to be more new-user (and old-user for that matter) friendly as well as adding new functionality. You can get the latest code using bzr on Launchpad. You can also file bugs :-)
Tomé and I are very much interested in feedback both on the UI and the features themselves . Note that to add new menu entries you need to have the os-prober package installed (it’s in Main) so that OS autodetection works.
Usual Disclaimer: This app is still very alpha, use at your own risk and make sure to make a backup of our grub config file (/boot/grub/menu.lst).
In Advanced mode you can also access a Preferences window for the individual menu items: