Most people spend a lot of time configuring their desktops, changing wallpapers, appearance settings, icons, metacity themes, compiz settings, skydomes, and god knows what else. Some people make their systems look like a mac, some make it look like vista, some make it look unique.
I think it would be a significant leap if we could make a SINGLE (large) file container, with everything involved in the desktop settings, and send it to other users. The community could share beautifully tuned desktops, and we all could experiment with numerous desktops really rapidly.
If we improve productivity in this arena, then everyone on windows would see amazing desktops, all changeable, and that's an important step towards solving bug#1.
A large file could have all associated settings, parameters, needed files, and command sequences to configure the desktop in ONE click. Most newbies don't have the know how or the patience to learn how to really transform a desktop... we could give them a little instant gratification, as this is something that no mac or windows user can do. And wouldn't it be cool to quickly check out if that awesome desktop fits your machine?