Just found out about the Ion talk that happened a month ago and gave it a listen. It's crazy to think that he says that designing systems in WoW should serve the players first yet they're constantly going against player feedback until it's way late into an expansion. They'll even make a system knowing it'll fail in the future and just say 'yeah we'll deal with that later'.
MoP talents were also seen as the perfect fix for years to come but people absolutely hated them because they weren't rewarding.

https://www.youtube.com/live/3b7uWPEN0Ok?si=m_pewRA2REdnYMZ2&t=14848