No 3X video Crop Mode on the 6D?

[ImJim]

Hi,

Recently bought the fantastic 6D, and I've been surprised. There's no 3x crop mode like on the 600D or 700D (I previously had a 700D).  Of course there's a crop mode with the RAW video mode, but here I'm talking about the 600D's sensor crop mode that we could find also on the 700D. (no RAW was needed)

Where it is? Has it disappeared due to the full frame sensor?? I guess this could be possible with an actual firmware update from Canon.. But is there any way ML developers could add this feature themselves? I know they can do it! 

Looking forward to your replies! Thanks guys.

Jim