Since I don't believe you participated in vengeance it appears you are speaking of traits indigenous to Ruin / Cyclone. I personally played Nightfall, Cyclone, Vengeance and Vindication in the burning crusade, Ruin in WOTLK.
Vengeance was never about "letting everyone else know how trash they are" as we were more mature than that. Sure there was some ego but after a good game you made a thread telling your opponents good game etc. It happened every single day. If anyone GY farmed there would be a thread up about them within minutes and they would be laughed out of our battlegroup. We weren't known for being sore losers and we would never be caught loss-dodging or afking from a challenge. I have never witnessed such a great display of sportsmanship in any other battle group, which supports my opinion that vengeance had the most sportsman-like conduct.
The reason why you can't name many Vengeance players is because we were not about popularity and there weren't many huge egos... just to name a few players whom you should have heard of though...... Sheep, Quara, Anarcan, Gabie, Slyfox, Vegan, Salt, Pepper, Cirran, Silin, Marcey, Pwndepot, Kablam, Kidneypopper, Peepeepopper, Biff, Drayner, Sidni, Wreckt, Revolution, Fortt, Kunzpopper, Derna. These are all extremely respectful players and would not (in the past) have been caught in the graveyard. I have never whitnessed such a great display of respectful gameplay in any other battle group, which supports my opinion that vengeance had the most respectful players.
Quote me where I said "most respected players" Attention to detail is key.
^.^