The enlightenment E17 desktop on Linux Mint 12 works a million times better than the Ubuntu packages did with 12.04. They were very unstable, but the Linux Mint 12 distribution is as stable as Linux should be. Even if it is a beta release as the Ubuntu distribution was, there is no excuse for the software to be as unreliable as Ubuntu tends to be these days. Once you install the E17 desktop with the sudo apt-get install e17 command on Linux Mint 12 and make the panel full-width and move it to the top of the screen, you have an awesome desktop. The enlightenment desktop has always been a different desktop experience to the old Gnome and KDE desktops, like Windowmaker and Fluxbox it has a place as an alternative to the domination of the more memory hungry desktop environments like KDE & Gnome, but KDE has gotten faster with the 4.8.0 release, there have been changes made to slim down the formerly bloated KDE desktop and make KDE 4.8.0 a viable contender for your default desktop. And it is much faster and more reliable than the Unity desktop. This link on my website tells you how to make KDE 4.8.0 look like KDE 3.4 with the KDE crystal theme. Getting back to the enlightenment desktop, there are many good themes that are available for enlightenment that can improve the look of your desktop as I do not like the default theme, so changing it is the second thing I do after installation.
The night-bling theme is the one I am using at the moment. If you get an error when importing this theme into the theme manager, then switch to the folder containing the theme and type: edje_convert night_bling-45.edj and the theme will be converted to the newest theme format. This works very well and then the theme may be installed and selected to change the look of your desktop.