There are two issues here. The visual part (flying objects) and the physics part (amount of damage).
The first part as said would be nice in the future, but I assume that it requires a lot programming and hardware resources, so +1 on this but not an urgent one. It could happen sometime in the future, maybe when we leave from the DirectX 8 engine.
For the damage forgiveness now, I don't think that the bf1 is very forgiving at all. If you push the car and try to be competative with some fast drivers you'll see that even the passing of the curbs gives you a little damage eah time and that after 10-15 laps you have some important damage in the car. And if you make a mistake and have a bigger impact, most of the time the damage is real big.
So, more damage is not what I'd like