Better see you fellas there =.=
And if you’re good, play Rogue on Arathi, please. We need them to get nerfed asap 
I think it could be a good time to show them how Mythic+ and PVE based class design affects PVP, especially in War Within.
If they play a kiting / CC based class - play Slayer Warrior into them, break out of their snares / roots and ignore their CC attempts with Bladestorms.
If they play a magic damage over time effects based spec - play a Rider of Apocalypse DK into them, be constantly in their face with immune to slows and knockbacks Death Charge and don’t forget to take talents that randomly apply Anti-Magic Shell to you and make AMS dispel all magical effects when applied.
If they play a pet based spec - bring Fire Mage into them (any hero spec) and don’t forget to take all talents that boost Living Bomb.
And so on.
After all, maybe we could make them care about TWW PVP balancing more if they feel all the “PVP pleasantries” coming in next expansion on their own.