I don't really understand why this is a question. Assassinations don't have to be performed, just tap RB if you are in a hurry. Personally I enjoy getting assassinated for two reasons; I enjoy the added animations and depth it gives to the gameplay, but it also gives my teammates more time to kill my assassin. it If it's because you think it will affect your commendation completion percentage and somehow lead people to think you aren't as good as you think you are, why does that even matter? Assassinations just display how sneaky, lucky, or foolhardy you are to get behind someone without being noticed, it's one of the least important stats in the game yet throws in the most fun out of all of them. Why should it disappear? In Halo 4 just take away the knife, add 3 parts jujitsu, 2 parts ninjitsu, a dash of realism, a sprinkle of genetically altered bioengineered futuristic super soldier, throw in some judo chops and throat rips and you're good