In the video world, Autofocus is not pro. A lot of pro will tell you to set everything to manual. They have a reason for that. However, I know some pro out there who use autofocus to their advantage.
That said, I dont think Autofocus for DSLR video is a feature that camera maker put on top of the list. However it would be nice to have.
On the side note, Focus preset and focus pulling is on my wish list. For me, Racking the perfect follow focus is harder than keeping things in focus Hell, they had this feature on the good old XL2 . The new magic lantern have follow focus function but I would like to see some thing that brewed by Canon.