I agree that killcam tagging is not great for, like, actual “you are breaking the rules” type enforcement (because, yeah, players will generate a ton of false-positives). But if players had a list of traits and match-making tried to minimize some distance in the trait space (admitting it could’ve be perfect), it might result in more fun matches.
Valve did it for CS, and it was called overwatch, sorry. [0]