Levels should be removed from World of WarCraft entirely. They serve very little purpose. I’m not talking about removing content, or removing zones, or removing anything in the game except for the act of leveling up. If you want to explore, read some lore, or progress you still can, but remove the worthless gate holding people back.
WoW begins at the end. Everything up to that point is just busy work. The argument that it teaches people how to play their class is invalid since players reach the max level and are still capable of being terrible — not to mention leveling and doing max level content are nothing alike.