It actually looks toxic and might create a form of focusing like "head hunting" whereby you see a player you know, or from a certain clan, or a certain streamer etc and go out of your way to collect his dog tag.... ya I think that's pretty toxic... and I don't care to know who killed me. We rarely ever kill each other on fair terms, in a 1 vs 1, same tank, nobody else etc, it's mostly always in situations where we have the upper hand or vs less hp or weaker tank or cornered with several other teammates etc. I never thought I outplayed anyone I killed like I was some big shot or was better than them. Some battles go this way, some battles go that way. sh(t happens and we move on to the next, I don't need some trophy for killing a player, just my personal performance such as high calibers and aces etc, those I arguably earned though with my teams help, for me, that's enough trinkets and it's nothing personal like dog tags.