it is annoying to see AV going hks trading like people want faster their title and rep awards as fast as possible. I can understand in some way that it's annoying to face turtle play with bunch of AOE frost mage pushing graveyard and die in spamming AOE area because you have limited resources to escape or because you have no dispell. After lots of AV before hks trading meta, I can tell i am impressed to see that so few mage cs, no dispell from priest defensive or offensive way, hunter with max range shot don't focus frost mage to stop aoe, few lock use cs, dm and death coil, no disarming hunter trap from rogue....
but going AV hks trading ruin the experience of the game even within limits i wrote above because some AV, before hks trading meta, when fight was going on in the middle of the map, were the most epic AV i player of my life.
The fact that people are agree to do hk trading may rely on the HK honor system. All pvp rank give same honor : 1 honor point by kill no matter the pvp rank you kill. I think it entice people to rush honor farming into those low gain HK tactics. i was thinking why all rank give 1 honor point by kill ? was it like that at vanilla era ? in the other hand, if a marshall or warlord give more honor, player with higher rank will be probably harassed. Team will focus higher rank in bg and world pvp. But in the other hand, it give big name of the server, it brings some excitement with horde/alliance rivalry. It push player and guild to organize themselves: make patrols, make group to farm or grind and strenghen their defense when then are in hostile territory. It make the world in game ruthless and this is what it is when it's war between 2 factions. You win 1v2, you are ganked, you are ganking etc..It brings love it brings hate...that's the game, thats make you want to connect and play, that make you want to progress, get gear, play better to survive.
So it's not easy to find good solution to go with pvp rank and hk system. But because you can expect abuse from players and you don't want to manage abusive behaviour or you are to lazy to manage this mess you change pvp system in order to have the less issues and conflict to manage but you change in the meanwhile all the game and the experience for the whole player base.
We have also to remind that HK av trading give best hk/hour so people prefer to remain in AV feeding kill and killing easaily instead of fighting in bgs or outdoor so you have less people outdoor wandering for fight and make the world living.
Maybe when you cross marshall or warlord you have not as much respect when you know there is av trading than when there is not even though team were built in vanilla bgs for honor farming.
when you meet higher rank in world pvp the meeting, the stress, the excitement is higher when the pvp title has been legally won and often you can see it clearly in the playstyle