Another advantage is the maturity of the Cinnamon API. There is an increasing number of extensions and third-party support available for it. Extensions can be read about in more depth here: http://cinnamon-spices.linuxmint.com/extensions
These are not as required as they were for Gnome 3, since Gnome was quite a screw-up compared to previous versions.
Expo, as expected, is just as good as it always was. Now there is a new feature that allows you to rename windows and even destroy them directly from the Expo dash.
But there is another disturbing bit of information that goes along with Cinnamon. One developer has been working on porting the Gnome keyboard shortcut option interface over to Cinnamon, and got stuck in the middle of his work when the release date hit. Whoops!
In lighter, better news for Cinnamon their new file manager, Nemo, has been finished and shipped with 1.6.1. Nemo is based on an earlier version of Gnome's Nautilus file manager, since the Gnome developers have been busy stripping features from their latest file browser. Also, Cinnamon no longer has memory issues. It tends to idle in the hundreds, where before it was not uncommon to have Cinnamon reach massive memory humps up to 800 MiB. And although Cinnamon does tend to consume more CPU Cycles than other desktop environments, the 17% CPU bug associated with opening the cinnamon menu has been fixed, meaning that searching can begin as soon as <Mod4> is pressed.