Client WinOS "always on" in Unity mode? Does it have to be like that?

I have a question to my fellow users of Fusion on Mac regarding the Unity feature in Fusion 6. When I start my client Win7 machine and set in Unity mode, it is always on, does not go to sleep, does not suspend after preset period of inactivity (tried 1-5 minutes). VMware process is constantly "doing something" eating 10% of the CPU even if there are no windows open and no tray icons displayed in menu bar. I was hoping that this particular "feature" will change in Fusion 6 as they wrote that they use each and every watt if energy efficiently. I was hoping that it will work as in Parallels (yes, I own Parallels and was thinking about switching to Fusion) where an idling machine can be automatically "paused" after a period of inactivity and consumes no CPU at all when no windows are opened. Can Fusion 6 be set to work like that too? This is something I'm unable to achieve at the moment Image may be NSFW.
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