Ehh, I still don't think there's THAT many uses for analog inputs though.
Beyond a single gas pedal, and maybe a break pedal, how many more do you really need? And wouldn't controllers still do this better?
I feel that it would also require a HUGE adjustment, because people are used to hitting a key fairly/moderately lightly and it reaching it's full depth in the full 0.01 seconds they press it down for. But analog keys would have to be higher up, to be able to perceive greater depths, so it would just FEEL weird to new users and would likely take too long to get used to encourage people to buy it.