Time to just revert the entire game and all of its systems to The Burning Crusade. Only two raid difficulties Normal (current Heroic) and Heroic (current Mythic). PvP vendors and resilience. 20 gem slots on BiS gear. Enchants for almost every slot. Professions that had an impact (BS got extra gem slots, LW bracer enchants, Tailoring cloak threads etc).
Just roll back 10 years of god-awful development decisions.
Edit: We can handle tertiary stats. Armor Pen, MP/5, Spell Pen, Expertise etc