Two things:
1) Keeping your eyes on the road requires controls with tactile feedback (e.g. buttons and knobs). The only time I use the 8" screen on my F150 is when the vehicle isn't moving. When I'm driving, which is obviously the vast majority of the time I'm in the truck, I use the dedicated buttons so I'm not distracted. Removing physical interfaces for virtual will cause accidents, plain and simple.
2) Ford is, and I can't emphasize this enough, absolutely awful at anything related to IT. Please please PLEASE, for the love of god, stick to engines, transmissions, and anything other than IT. If Ford insists on shoving that much technology (read: software/ux) into a vehicle, OUTSOURCE IT.
My wife drives a '17 Explorer, and I'm glad we have no plans to upgrade soon. As for my (hopefully soon to be delivered) Raptor, the 8" screen is just fine. Keep that 12in "ooh ooh look at me" Dodge Ram marketing crap out of my truck.