I had mentioned this on Classic when guild forts and leaderboards were first released as another way to recognize guilds not players, and I feel this would work far better, such as a guild "rank", which can still be deemed a competitive way to help grow a guild without getting a 1k or GST win.
On the other hand, I wouldn't want this to be implemented to players as the killing categories have already thrown up problems, such as "nolifeism" and I feel that rewarding every single player with a badge is silly, just play the game.