I've made threads similar to this, but I was arguing that they should lose the fight outright by TKO if they get dumped on their head or slammed on their back/neck. The reason that the octagon canvas and other wrestling mats and the mats of combat sports are soft is because we all know that if it were hard like concrete or a hardwood floor or even just dry dirt in the park, then falling and getting slammed could actually kill the fighter if not cause serious damage to them. This is why there are things like G-Max scales and HIC in sports which regulates the softness of sport grounds. The rules of the sport makes up for the difference for most other techniques, but for some reason the soft ground and the artificial reduction of the effectiveness of judo throws and slams are not considered. It should be in the ruleset that if you slam your opponent on their back (NOT on their ass) then they lose a point for the round. Slamming then becomes more than just a way into ground fighting and we can make up for the difference in the reduction of the damage dealt with such techniques that the sport has to mitigate for the safety of the fighters. If the octagon canvas were made of concrete, then we all know how hard takedowns would play out.