With 70D rack focus, not sure but to me touch screen pull focus is as useful and much easier to use.
With AF facial recog, or even singe zone AF, with AI servo, is as useful as follow focus.
Focus peaks & zebras are great. I like to use both for photo as well as video.
But if we could get Dual ISO for HDR shooting, and variable bit rate to pump up H264 detail now that would be kick ass. JM2C.