Better kill system for halo 5

So how many people enjoy getting their kills stolen by someone who shot one bullet into a guy you almost killed then got ALL the credit for the kill leaving you with an assist? No one does, so lets say the you did 99% of the damage then your lazy team mate puts one bullet into him and kills him, you would get 99 points and your team mate would get 1 point.( 100 points = 1 kill in the score box). This would also make your kill death ratio more precise using these points instead using what we have now with every ones kda filled with stolen kills. (mine included) (And each death counts as -100 points in your kda not score).