Earlier quoted context omitted.
Some ideas seem kind of interesting, like the HUD thingy, but I very much doubt it will be enough to bring disappointed users back to using Ubuntu. Xubuntu is quite good if you're looking for something close to the gnome 2 experience.
The desktop is just there to launch and switch between applications. I want it to stay simple and to keep out of my way. I've not tried Xubuntu yet, but it sounds/looks like it will be better at satisfying these requirements for me.
If that's how you look at the desktop, then you should definitely look at Lubuntu. It's just windows and a panel. When you look at an Xfce desktop, it looks like Xfce. When you look at Lubuntu, it's just windows and a panel.