Not everyone is interested in PvP and focus primarily on PvE. However, there are BIS items locked behind PvP content. Having tabards that enable players to receive BG reputation while engaging in PvE content may have a positive effect on the state of the game.
Players that prefer PvE wont be participating in BGs which will increase the quality of matches that are taking place by those that are invested in PvP. Will also reduce the amount of players participating in the open world PvP events which will help with population and layers taking part in it. PvE focused players will be taking part in more dungeons allowing more characters to be engaged because as it is now, once we get our dungeon upgrades, we rarely return to dungeons.
If PvP reputation tabards were implemented, a great place to place them would be from the waylaid vendor at revered which will reduce irritation that some players are having with the rewards.
I am curious what others think of this idea.