The overall height, especially of the hood is also really important for the pedestrian's chances. if a sedan hits you, ideally you can roll over the top. if a truck or suv with enough size hits you, you go under it.
Not that it's a guarantee but at least tesla's emergency breaking detects pedestrians already. We're still a couple years from release. I'd like to think the long-term solution is to just stop hitting pedestrians with cars.