Bump stop for suspension should be added because at the moment when i want to drive rallycross i cant make suspension hard enough to take the landing and the front end of car gets bent up and it is over for fast driving.
Are you talking about hydraulic bump stops? Because bump stops are already implemented. Also, no matter what bump stop you have, if you go over a huge jump at high speed the frame is going to be bent. Many cars have Rally springs/dampers that are tougher than the stock ones. Hoped that helped.
