(One would assume that you're aiming at recreating something close to the traditional Mint menu.)
This is why I'm using Cardapio instead of the standard LM menu, the disadvantage being that it appears after the Activities label: from time to time I go with the mouse pointer to the left corner of my desktop, which of course means activating the GS overview mode.
But all in all I'm quite happy with LM because thanks to MGSE and to other extensions I have a choice: I can shape the desktop the way I like, which, and this is interesting, doesn't mean replicating exactly the Gnome 2 experience. For instance, I'm actually using the GS overlay mode to quickly browse my workspaces' content and move to the desired application. The downside is that this mix and match of different components makes it easier to make the system unstable: sometimes GS restarts automatically, a couple of times the whole system froze dead.
Cinnamon looks like a good idea to me, then, I only hope it will retain configurability and flexibility. Also it will be tricky to innovate the old (and somewhat stale) Gnome 2 layout: a lot of testing will be required, the potential is huge though.
BTW, can I safely install this in parallel to my current LM 12 system? or would it be better to test a live system?