The game is not designed for PvP in the open world, the zone instances are not designed to support PvP in the open world, the classes are not balanced to support PvP in the open world.

The justification for PvP in the open world does not exist. There is neither Horde vs Alliance nor Faction vs Faction nor "Two sides contest for existence in a world torn apart by War".

You want PvP in the open world, try ArcheAge, Blade and Soul, or any of the other PvP-centric MMORPGs that are available to you. This one wasn't built for it. And I don't want the developers spending time trying to figure out how to make it happen.

I still don't have fond memories as a non-PvP flagged player leveling through Darkshore when Burning Crusade came out.