For me it was a major revelation when it was pointed out that, for someone who doesn't want his desktop changed, I did install all sorts of crazy things when I was starting with Linux (Compiz plugins, anyone?). And while Gnome 3 pushed me into Mate, it wasn't because it was different but rather because it was bad. So I'm excited about someone trying something new, particularly someone who realizes that the Desktop is not a tablet.

Here's an idea that I believe I read in HN as "the original purpose of the desktop": add a Desktop Manager that manages which icons are on your desktop and makes it easy to switch.

The desktop is kind of weird, in the sense that it's prime real estate but, at the same time, there's an expectation that you shouldn't put too much stuff there, and then it ends up cluttered anyway. I think it's worth trying a stronger separation between "Desktop" and any other regular folder, emphasizing that the Desktop is where you place links to the files you need right now, but with a mechanism to clear it completely (without losing data) and another to switch which icons you see right now, kind of like browser tab groups. That way, when you're working on a project you place the files you need on the desktop and when you're done you clean it up.