I'm late with this kind of input maybe, but I only recently saw the "work in progress" sneak peek.
I'm disappointed to see that hitting peds as demonstrated in this video isn't far removed from the same in Carpocalypse Now. Pedestrians bounce atop the car and their limbs detach cleanly. They don't thump or shake violently or get ripped to shreds as would be most visceral and intuitive. From early concept art, it also looked like they could possibly be smeared into the ground (and therefore easily able to be driven over), but the pedsin the video are just pushed by the bounding box. I vaguely remember a blog post suggesting that I would have fun attacking peds with the different weapon rigs of each vehicle, but the peds bounce off the Eagle's razor canopy as if it was made of pillows.
Of course it's a work in progress, and an old one, they could easily have surpassed the demonstrated mechanics by now. The new post about the detailed suspension is encouraging too - they might be aiming for this level of detail all around for the sake of stylistic uniformity.
Assuage my fears that the ped mechanics get better than what I've seen!