If you have ever played Eve, you know what this suggestion is about. Killboards in Eve are a web portal that keeps track of each player kill and who was involved. They are the informal scoreboard for Eve PVP.
Instead of some anonymous meaningless honorable kill stat, pvp scoreboards would let everyone see who killed who. They are a far better way of determining who is better at pvp than Honor.
It wouldn't really be feasible on retail with battlegroups, but with one server like Nost, it might just be doable.