So, in Halo: CE PC Multiplayer (and possibly the original version, I don’t remember) there was a hit ping noise whenever you damaged an enemy. This is present in The Master Chief Collection’s version of Halo: CE Multiplayer… For some people, or perhaps for all people only some times. I’ve noticed that my version of the game lacks the hit ping noise. I’ve watched videos of other people play H:CE multiplayer in MCC. Some people have the ping, others don’t. What’s up with this?
Also, the hit ping noise in the Halo 5 Beta was definitely inspired by the Halo: CE hit ping, even if unintentionally, but I don’t think anyone has ever noticed this.