Regarding fonts didnt Redhat recently released some good fonts under the name of liberation Fonts
http://www.press.redhat.com/2007/05/09/liberation-fonts/
And gaming and 3D front should improve with
http://enterpriselinuxlog.blogs.techtarget.com/2007/05/09/amd-will-deliver-open-graphics-drivers/
And one major front where Windows really-really lack is my faith in it as a reliable version of DOS. »