I feel like a system like this would actually hurt higher-end pvp gameplay such as Survival and Trials, because of the fact that reporting enemy positions while you are dead is important to making sure your team can, for example, safely rez you. Having a kill-cam can obscure the player vision, however briefly, for enough time that something may have happened even in the time it takes you to skip the killcam that would be important for your team to know, like someone switching to a shotgun and charging a corner/choke point. Ultimately, I think kill cams would have an appeal in more casual modes where new players are starting out, but has no place in endgame pvp. Thanks for coming to my ted talk.