My most hated class is Hunter for sure, they never leave you alone in the open world and getting kiting is one of the worst feelings. I'm going to be making sure I bring plenty of FAPs with me while I level.
Most envied class is Mage just for their control as frost.
No warrior self heal, gotta roll first aid for that one.
No original unarmored epic mounts
Pallys bubble hearth for sure.